Membrane electrode matching method and device, electronic equipment and storage medium

Abstract

The invention provides a membrane electrode matching method and device, electronic equipment and a storage medium, the method is applied to a fuel cell, and the method comprises the following steps: determining a membrane electrode low oxygen evolution catalyst coating membrane under a plurality of humidification degrees; based on each humidifying degree, matching a target anode GDL corresponding to each humidifying degree and a target cathode GDL corresponding to each humidifying degree from a preset GDL characteristic parameter table; and obtaining a plurality of membrane electrodes based on the membrane electrode low oxygen evolution catalyst coating membranes under the plurality of humidification degrees, the target anode GDL corresponding to each humidification degree and the target cathode GDL corresponding to each humidification degree, performing fuel cell performance test on the plurality of membrane electrodes, and determining a target membrane electrode from the plurality of membrane electrodes according to a performance test result. According to the method, the catalyst coating film is matched with a proper gas diffusion layer, so that the cell performance is improved, and cost reduction and efficiency improvement of a fuel cell product are facilitated while the anti-polarity capability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fuel cells, and more particularly, to a membrane electrode matching method and device, an electronic device and a storage medium in the field of fuel cells. BACKGROUND

[0002] Proton exchange membrane fuel cells (PEMFC) have a wide application prospect due to their high power density and high efficiency as a high-efficiency clean power source for fuel cell electric vehicles (FCEV). However, during the long-time operation of fuel cell batteries, during the rapid start, stop or operation process, especially when the load changes greatly, single or multiple cells in the battery pack will have a negative voltage failure phenomenon, i.e., the battery changes from an energy supply state to an energy consumption state, and in severe cases, even causes the battery to burn or explode, thereby causing the failure of the entire stack, i.e., the "reverse polarization phenomenon" occurs. This phenomenon can cause the battery voltage to reverse, resulting in water electrolysis and carbon corrosion reactions in the anode region, and ultimately causing catastrophic battery failure. Therefore, it is particularly important to improve the reverse polarization resistance of fuel cells.

[0003] In related technologies, a commonly used method is to add a large amount of reverse polarization-resistant catalyst (such as IrO2) to the anode of the fuel cell to improve the reverse polarization resistance of the membrane electrode. As shown in the formula (1), this method does have a certain effect in improving the reverse polarization resistance of the membrane electrode. Figure 1

[0004] However, although adding a large amount of IrO2 can improve the reverse polarization resistance of the membrane electrode, the high cost of the added reverse polarization-resistant catalyst leads to a significant increase in the cost of the fuel cell, which is not conducive to the commercialization of the product and needs to be addressed urgently. SUMMARY

[0005] The present application provides a membrane electrode matching method, device, electronic device and storage medium. The method matches a suitable gas diffusion layer to the catalyst coating film, which not only improves the performance of the battery, but also helps to reduce the cost and increase the efficiency of the fuel cell product while improving the reverse polarization resistance.

[0006] In a first aspect, a membrane electrode matching method is provided, the method comprising:

[0007] determining a carbon coated membrane (CCM) at a plurality of humidification levels;

[0008] ​Based on each degree of humidification, the target anode GDL and the target cathode GDL corresponding to each degree of humidification are matched from the preset GDL (Gas Diffusion Layer) characteristic parameter table.

[0009] Multiple membrane electrodes are obtained based on the low oxygen evolution catalyst coating membrane of the membrane electrode under the multiple humidification degrees, the target anode GDL corresponding to each humidification degree, and the target cathode GDL corresponding to each humidification degree. The performance of the multiple membrane electrodes is tested on each of the multiple membrane electrodes, and the target membrane electrode is determined from the multiple membrane electrodes according to the performance test results.

[0010] By matching an appropriate gas diffusion layer to the catalyst coating film, the above technical solution improves battery performance, enhances anti-reverse polarity capability, and helps reduce costs and increase efficiency in fuel cell products.

[0011] In conjunction with the first aspect, in some possible implementations, determining the target membrane electrode from the plurality of membrane electrodes based on performance test results includes:

[0012] Based on the performance test results, determine the characteristic current density performance of the polarization curve for each membrane electrode and the anti-reverse polarization time for each membrane electrode.

[0013] Based on the characteristic current density performance of the polarization curve corresponding to each membrane electrode, the first membrane electrode with the best polarization performance is determined, and based on the anti-reverse polarization duration corresponding to each membrane electrode, the second membrane electrode with the best anti-reverse polarization capability is determined.

[0014] Determine whether the characteristic current density performance of the polarization curve corresponding to the first membrane electrode meets the preset performance requirements, and whether the anti-reverse polarization duration corresponding to the second membrane electrode meets the preset anti-reverse polarization requirements.

[0015] If the characteristic current density performance of the polarization curve corresponding to the first membrane electrode meets the preset performance requirement, and the anti-reverse polarization duration corresponding to the second membrane electrode meets the preset anti-reverse polarization requirement, then the cathode GDL of the first membrane electrode is used as the cathode GDL of the target membrane electrode, and the anode GDL of the second membrane electrode is used as the anode GDL of the target membrane electrode to fabricate the target membrane electrode.

[0016] The above technical solutions enable accurate evaluation of membrane electrode performance and selection of the target membrane electrode that best meets the requirements, thereby ensuring the performance and quality of the final product.

[0017] In combination with the first aspect and the above implementation methods, in some possible implementation methods, after determining whether the characteristic current density performance of the polarization curve corresponding to the first membrane electrode meets the preset performance requirement, and whether the anti-reverse polarization duration corresponding to the second membrane electrode meets the preset anti-reverse polarization requirement, the method further includes:

[0018] If the characteristic current density performance of the polarization curve corresponding to the first membrane electrode does not meet the preset performance requirement, or the anti-reverse polarization duration corresponding to the second membrane electrode does not meet the preset anti-reverse polarization requirement, then according to the preset increase strategy, the areal density parameter of the anode GDL of each membrane electrode and the porosity parameter of the cathode GDL of each membrane electrode are increased, and according to the preset decrease strategy, the porosity parameter of the anode GDL of each membrane electrode and the areal density parameter of the cathode GDL of each membrane electrode are decreased.

[0019] The performance of the multiple adjusted membrane electrodes was tested for fuel cells until the characteristic current density of the polarization curve corresponding to the new first membrane electrode met the preset performance requirements and the anti-reverse electrode duration corresponding to the new second membrane electrode met the preset anti-reverse electrode requirements. The cathode GDL of the new first membrane electrode was used as the cathode GDL of the target membrane electrode, and the anode GDL of the new second membrane electrode was used as the anode GDL of the target membrane electrode to fabricate the target membrane electrode.

[0020] By implementing the above technical solution and readjusting the performance parameters of the target anode GDL and the target cathode GDL, precise control and optimization of the membrane electrode performance are achieved, thereby ensuring that the membrane electrode can meet the specific fuel cell performance requirements.

[0021] In combination with the first aspect and the above implementation, in some possible implementations, the plurality of humidification degrees include a first to a third humidification degree, wherein the relative humidity of the first humidification degree is less than the relative humidity of the second humidification degree, and the relative humidity of the second humidification degree is less than the relative humidity of the third humidification degree.

[0022] By using the above technical solution and setting multiple humidification levels for testing, these different actual working environments can be simulated. This facilitates subsequent comparison of test results under different humidification levels to understand the performance change trend of the membrane electrode low oxygen evolution catalyst coating film under different humidity conditions.

[0023] In combination with the first aspect and the above-described implementations, in some possible implementations, determining the membrane electrode low oxygen evolution catalyst coating film under multiple humidification levels includes:

[0024] Obtain the baseline GDL;

[0025] Based on the first to third humidification levels, humidity sensitivity tests were conducted using multiple membrane electrode low oxygen evolution catalyst coating films to be evaluated, matched with the benchmark GDL, to obtain humidity sensitivity test results.

[0026] Based on the humidity sensitivity test results, low oxygen evolution catalyst coating films for membrane electrodes that meet the preset performance and correspond to the first to third humidification levels are selected to be evaluated, thus obtaining the low oxygen evolution catalyst coating films for membrane electrodes under the multiple humidification levels.

[0027] The above technical solution can comprehensively evaluate the performance of the membrane electrode low oxygen evolution catalyst coating membrane under different humidification levels, thereby obtaining the optimal humidification level for the membrane electrode low oxygen evolution catalyst coating membrane. In other words, there are corresponding optimized membrane electrodes to choose from under different humidity conditions, which improves the adaptability and stability of the fuel cell system.

[0028] In combination with the first aspect and the above implementation methods, in some possible implementation methods, the step of matching the target anode GDL and the target cathode GDL corresponding to each humidification degree from a preset GDL characteristic parameter table includes:

[0029] For the first humidification level, the GDL characteristic parameter with the highest water retention performance is selected from the preset GDL characteristic parameter table to generate the target anode GDL corresponding to the first humidification level, and the GDL characteristic parameter with the lowest air permeability is selected from the preset GDL characteristic parameter table to generate the target cathode GDL corresponding to the first humidification level.

[0030] For the second degree of humidification, the target anode GDL corresponding to the second degree of humidification is generated by selecting the GDL characteristic parameter with the second highest water retention performance from the preset GDL characteristic parameter table, and the target cathode GDL corresponding to the second degree of humidification is generated by selecting the GDL characteristic parameter with the second highest air permeability from the preset GDL characteristic parameter table.

[0031] For the third humidification level, the GDL characteristic parameter with the lowest water retention performance is selected from the preset GDL characteristic parameter table to generate the target anode GDL corresponding to the third humidification level, and the GDL characteristic parameter with the highest air permeability is selected from the preset GDL characteristic parameter table to generate the target cathode GDL corresponding to the third humidification level.

[0032] The above technical solution allows for quick and accurate matching of a suitable GDL for the current humidification level using a preset GDL characteristic parameter table, simplifying the operation process. By selecting different GDL characteristic parameters, customized matching of the anode and cathode GDLs can be achieved.

[0033] In a second aspect, a membrane electrode matching device is provided, the device comprising:

[0034] A determination module is used to determine the low oxygen evolution catalyst coating membrane of the membrane electrode under multiple humidification levels;

[0035] The matching module is used to match the target anode GDL and the target cathode GDL corresponding to each humidification degree from a preset GDL characteristic parameter table based on each humidification degree.

[0036] The testing module is used to obtain multiple membrane electrodes based on the low oxygen evolution catalyst coating membrane of the membrane electrode under multiple humidification degrees, the target anode GDL corresponding to each humidification degree, and the target cathode GDL corresponding to each humidification degree, and to perform fuel cell performance tests on the multiple membrane electrodes respectively, and to determine the target membrane electrode from the multiple membrane electrodes according to the performance test results.

[0037] In conjunction with the second aspect, in some possible implementations, the test module is used for:

[0038] Based on the performance test results, determine the characteristic current density performance of the polarization curve for each membrane electrode and the anti-reverse polarization time for each membrane electrode.

[0039] Based on the characteristic current density performance of the polarization curve corresponding to each membrane electrode, the first membrane electrode with the best polarization performance is determined, and based on the anti-reverse polarization duration corresponding to each membrane electrode, the second membrane electrode with the best anti-reverse polarization capability is determined.

[0040] Determine whether the characteristic current density performance of the polarization curve corresponding to the first membrane electrode meets the preset performance requirements, and whether the anti-reverse polarization duration corresponding to the second membrane electrode meets the preset anti-reverse polarization requirements.

[0041] If the characteristic current density performance of the polarization curve corresponding to the first membrane electrode meets the preset performance requirement, and the anti-reverse polarization duration corresponding to the second membrane electrode meets the preset anti-reverse polarization requirement, then the cathode GDL of the first membrane electrode is used as the cathode GDL of the target membrane electrode, and the anode GDL of the second membrane electrode is used as the anode GDL of the target membrane electrode to fabricate the target membrane electrode.

[0042] In conjunction with the second aspect and the above implementation methods, in some possible implementation methods, after determining whether the characteristic current density performance of the polarization curve corresponding to the first membrane electrode meets the preset performance requirement, and whether the anti-reverse polarization duration corresponding to the second membrane electrode meets the preset anti-reverse polarization requirement, the test module is further configured to:

[0043] If the characteristic current density performance of the polarization curve corresponding to the first membrane electrode does not meet the preset performance requirement, or the anti-reverse polarization duration corresponding to the second membrane electrode does not meet the preset anti-reverse polarization requirement, then according to the preset increase strategy, the areal density parameter of the anode GDL of each membrane electrode and the porosity parameter of the cathode GDL of each membrane electrode are increased, and according to the preset decrease strategy, the porosity parameter of the anode GDL of each membrane electrode and the areal density parameter of the cathode GDL of each membrane electrode are decreased.

[0044] The performance of the multiple adjusted membrane electrodes was tested for fuel cells until the characteristic current density of the polarization curve corresponding to the new first membrane electrode met the preset performance requirements and the anti-reverse electrode duration corresponding to the new second membrane electrode met the preset anti-reverse electrode requirements. The cathode GDL of the new first membrane electrode was used as the cathode GDL of the target membrane electrode, and the anode GDL of the new second membrane electrode was used as the anode GDL of the target membrane electrode to fabricate the target membrane electrode.

[0045] In conjunction with the second aspect and the above implementation methods, in some possible implementation methods, the plurality of humidification degrees include a first to a third humidification degree, wherein the relative humidity of the first humidification degree is less than the relative humidity of the second humidification degree, and the relative humidity of the second humidification degree is less than the relative humidity of the third humidification degree.

[0046] In combination with the second aspect and the above implementation methods, in some possible implementation methods, the determining module is used for:

[0047] Obtain the baseline GDL;

[0048] Based on the first to third humidification levels, humidity sensitivity tests were conducted using multiple membrane electrode low oxygen evolution catalyst coating films to be evaluated, matched with the benchmark GDL, to obtain humidity sensitivity test results.

[0049] Based on the humidity sensitivity test results, low oxygen evolution catalyst coating films for membrane electrodes that meet the preset performance and correspond to the first to third humidification levels are selected to be evaluated, thus obtaining the low oxygen evolution catalyst coating films for membrane electrodes under the multiple humidification levels.

[0050] In combination with the second aspect and the above implementation methods, in some possible implementations, the matching module is used for:

[0051] For the first humidification level, the GDL characteristic parameter with the highest water retention performance is selected from the preset GDL characteristic parameter table to generate the target anode GDL corresponding to the first humidification level, and the GDL characteristic parameter with the lowest air permeability is selected from the preset GDL characteristic parameter table to generate the target cathode GDL corresponding to the first humidification level.

[0052] For the second degree of humidification, the target anode GDL corresponding to the second degree of humidification is generated by selecting the GDL characteristic parameter with the second highest water retention performance from the preset GDL characteristic parameter table, and the target cathode GDL corresponding to the second degree of humidification is generated by selecting the GDL characteristic parameter with the second highest air permeability from the preset GDL characteristic parameter table.

[0053] For the third humidification level, the GDL characteristic parameter with the lowest water retention performance is selected from the preset GDL characteristic parameter table to generate the target anode GDL corresponding to the third humidification level, and the GDL characteristic parameter with the highest air permeability is selected from the preset GDL characteristic parameter table to generate the target cathode GDL corresponding to the third humidification level.

[0054] Thirdly, an electronic device is provided, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the membrane electrode matching method as described in the above embodiments.

[0055] Fourthly, a computer-readable storage medium is provided that stores computer program code, which, when executed on a computer, causes the computer to perform the membrane electrode matching method of the first aspect or any possible implementation thereof. Attached Figure Description

[0056] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0057] Figure 1 This is a graph showing the relationship between Ir loading and reverse polarity resistance time in related technologies;

[0058] Figure 2 This is a flowchart of a membrane electrode matching method provided according to an embodiment of this application;

[0059] Figure 3 This is a schematic diagram showing the test results of the MEA's anti-reverse polarity capability under different GDL combinations according to an embodiment of this application;

[0060] Figure 4 This is a schematic diagram showing the test results of MEA polarization performance under different GDL combinations according to an embodiment of this application;

[0061] Figure 5 This is a flowchart of a membrane electrode matching method according to an embodiment of this application;

[0062] Figure 6This is a block diagram of a membrane electrode matching device according to an embodiment of this application;

[0063] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0064] The technical solutions in this application will be clearly and thoroughly described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in the text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0065] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0066] The following description, with reference to the accompanying drawings, describes a membrane electrode matching method, apparatus, electronic device, and storage medium according to embodiments of this application.

[0067] Before introducing the membrane electrode matching method of the embodiments of this application, let's briefly introduce the relevant knowledge of fuel cell technology.

[0068] Specifically, to make automotive fuel cells commercially viable, three main challenges must be addressed: cost, performance, and durability. The core component of a PEMFC, the membrane electrode assembly (MEA), is composed of a proton exchange membrane, anode and cathode catalyst layers, and a gas diffusion layer (GDL). The gas diffusion layer is a crucial component of the membrane electrode assembly, acting as a carrier for water vapor transport, heat transfer, and electron conduction in the hydrogen fuel cell system, and providing structural support for other components during assembly and operation. Therefore, the performance of the GDL material directly affects the electrochemical reaction and the cell's efficiency. Despite significant progress in proton exchange membrane fuel cell research, substantial voltage drops remain unavoidable, primarily due to the large mass transfer resistance inherent in the slow oxygen reduction (ORR) kinetics within the cathode catalyst layer. Therefore, matching the characteristics of the gas diffusion layer in a proton exchange membrane fuel cell has a crucial impact on the overall cell performance.

[0069] Furthermore, fuel cells face various complex operating conditions during actual operation, such as start-up, load changes, and freeze-thaw cycles. These conditions can easily trigger reverse polarity, leading to water electrolysis and carbon corrosion, with water electrolysis occurring rapidly. During carbon corrosion, catalyst particles detach and agglomerate, reducing the electrochemical active area of ​​the catalyst and altering the structure at the three-phase interface. Additionally, localized hot spots can cause membrane perforation, resulting in short circuits between the positive and negative electrodes. Therefore, improving the membrane electrode assembly's resistance to reverse polarity while maintaining the catalyst's catalytic performance, thereby extending the fuel cell's lifespan, has become a pressing technical challenge.

[0070] Therefore, based on the above problems, this application proposes a membrane electrode matching method. By matching an appropriate gas diffusion layer to the catalyst coating membrane, not only is the battery performance improved, but also the anti-reverse polarity capability is enhanced, which helps to reduce the cost and increase the efficiency of fuel cell products.

[0071] Specifically, Figure 2 This is a schematic flowchart of a membrane electrode matching method provided in an embodiment of this application.

[0072] like Figure 2 As shown, the membrane electrode matching method includes the following steps:

[0073] In step S201, the membrane electrode low oxygen evolution catalyst coating film under multiple humidification levels is determined.

[0074] In some embodiments, the multiple humidification levels include a first to a third humidification level, wherein the relative humidity of the first humidification level is less than the relative humidity of the second humidification level, and the relative humidity of the second humidification level is less than the relative humidity of the third humidification level.

[0075] Optionally, the first humidification level can be a low humidification level, with RH (Relative Humidity) < 30%; the second humidification level can be a medium humidification level, with RH: 30%-50%; and the third humidification level can be a high humidification level, with RH > 60%, without specific limitations here.

[0076] Further, in some embodiments, determining the membrane electrode low oxygen evolution catalyst coating film under multiple humidification levels includes: obtaining a benchmark GDL; based on the first to third humidification levels, performing humidity sensitivity tests on multiple membrane electrode low oxygen evolution catalyst coating films to be evaluated using the benchmark GDL to obtain humidity sensitivity test results; based on the humidity sensitivity test results, selecting membrane electrode low oxygen evolution catalyst coating films to be evaluated that meet preset performance characteristics and correspond to the first to third humidification levels respectively, thereby obtaining membrane electrode low oxygen evolution catalyst coating films under multiple humidification levels.

[0077] Here, the baseline GDL refers to the characteristic parameters of the GDL of the first-generation product, and the humidity sensitivity test refers to the test method used to evaluate the performance stability of the membrane electrode low oxygen evolution catalyst coating membrane under specific humidity conditions. The preset performance can be the optimal performance of the membrane electrode low oxygen evolution catalyst coating membrane under multiple humidification levels obtained by those skilled in the art through experiments or computer simulations.

[0078] Specifically, in this application embodiment, a baseline GDL can be obtained using existing technology, and multiple membrane electrode low oxygen evolution catalyst coatings to be evaluated can be matched with the baseline GDL to ensure effective transfer of current and gas. At each humidification level, humidity sensitivity tests are conducted using multiple membrane electrode low oxygen evolution catalyst coatings to be evaluated against the baseline GDL to assess their performance. This yields performance data (i.e., humidity sensitivity test results) for each membrane electrode low oxygen evolution catalyst coating under different humidity conditions, such as current density, voltage, and power density. By comparing the performance data of the membrane electrode low oxygen evolution catalyst coatings to be evaluated under different humidity conditions, the membrane electrode low oxygen evolution catalyst coating with the best performance at each humidification level can be selected. The selected membrane electrode low oxygen evolution catalyst coating is the membrane electrode low oxygen evolution catalyst coating under multiple humidification levels.

[0079] For example, three different humidity conditions are set for testing: low humidity (RH: <30%), medium humidification (RH: 30%-50%), and high humidification (RH: >60%). Under each humidity condition, the membrane electrode coating (MEC) and the matching reference GDL are ensured to reach a stable humidity state before testing. Humidity sensitivity tests are performed on the MEC and matching reference GDL under each humidity condition. Performance data of the MEC under different humidity conditions, such as current density, voltage, and power density, are recorded and compared. By comparing the performance data of the MEC under the three humidity conditions, the optimal humidity condition is determined. If the optimal performance occurs under low humidity conditions, the anode and cathode humidification level of the MEC is determined to be low humidity. If the optimal performance occurs under medium or high humidification conditions, the anode and cathode humidification level of the MEC is determined to be medium or high humidification respectively.

[0080] In step S202, based on each degree of humidification, the target anode GDL and the target cathode GDL corresponding to each degree of humidification are matched from the preset GDL characteristic parameter table.

[0081] To reduce the cost of practical applications, the matching principle of this application embodiment is to use a small amount of OER (Oxygen Evolution Reaction) catalyst (e.g., the IrO2 loading is <0.01 mg / cm³). 2 While ensuring performance, it matches GDLs with different characteristics to improve the anode's ability to resist reverse polarity.

[0082] For example, the preset GDL characteristic parameter table can be shown in Table 1, which is the GDL characteristic parameter table:

[0083] Table 1

[0084]

[0085] Specifically, based on the anode and cathode humidification degree of the low oxygen evolution catalyst coating membrane of the membrane electrode and the reference GDL, a commercially available target anode GDL and target cathode GDL that match it are selected from the preset GDL characteristic parameter table.

[0086] Those skilled in the art will understand that two reaction processes occur during the reverse polarity process. First, due to the action of the OER catalyst, the electrolysis potential of water is reduced, thereby promoting the hydrolysis reaction. To ensure the efficient conduct of the hydrolysis reaction, the anode side needs to maintain a sufficient water content (i.e., water stoichiometry > 1). Therefore, GDL with good water retention properties should be used on the anode side. On the cathode side, since oxygen needs to undergo an electrochemical reaction with protons transferred from the anode, in order to reduce the resistance to oxygen transport, improve electrochemical performance, and thus increase the power density of the battery, GDL with excellent gas permeability should be selected on the cathode side.

[0087] Therefore, in order to improve the anti-reverse polarity capability, the anode catalyst layer of this application embodiment is matched with GDL, which has strong water retention and corrosion resistance. For example, a porosity of <70% and a surface density of >90g / m³ can be selected. 2 Vertical gas permeability > 10s, planar gas permeability < 1μm 2 The GDL is used. To improve performance and achieve good gas transport and moisture management, the cathode catalyst layer of this application embodiment is matched with a GDL with good gas permeability, for example, a porosity > 75% and a surface density < 60 g / m³. 2 Vertical gas permeability < 0.5s, planar gas permeability > 10μm 2 GDL.

[0088] Further, in some embodiments, based on each humidification level, matching the target anode GDL and the target cathode GDL corresponding to each humidification level from a preset GDL characteristic parameter table includes: for a first humidification level, selecting the GDL characteristic parameter with the highest water retention performance from the preset GDL characteristic parameter table to generate the target anode GDL corresponding to the first humidification level, and selecting the GDL characteristic parameter with the lowest air permeability from the preset GDL characteristic parameter table to generate the target cathode GDL corresponding to the first humidification level; for a second humidification level, selecting the GDL characteristic parameter with the second highest water retention performance from the preset GDL characteristic parameter table to generate the target anode GDL corresponding to the second humidification level, and selecting the GDL characteristic parameter with the second highest air permeability from the preset GDL characteristic parameter table to generate the target cathode GDL corresponding to the second humidification level; for a third humidification level, selecting the GDL characteristic parameter with the lowest water retention performance from the preset GDL characteristic parameter table to generate the target anode GDL corresponding to the third humidification level, and selecting the GDL characteristic parameter with the highest air permeability from the preset GDL characteristic parameter table to generate the target cathode GDL corresponding to the third humidification level.

[0089] Understandably, at the first humidification level (i.e., under low humidification conditions), the target anode GDL needs to have a high water retention capacity to ensure sufficient moisture inside the fuel cell and maintain good proton conduction performance. Therefore, the GDL characteristic parameter with the highest water retention capacity is selected from the preset GDL characteristic parameter table to generate the target anode GDL corresponding to the first humidification level. Furthermore, when there is more moisture on the anode side, the cathode side needs lower permeability to reduce water vapor escape and maintain moisture balance inside the fuel cell. Therefore, the GDL characteristic parameter with the lowest permeability is also selected from the preset GDL characteristic parameter table to generate the target cathode GDL corresponding to the first humidification level.

[0090] Furthermore, as the humidification level increases, the water retention performance requirement of the GDL can be appropriately reduced under the second humidification level (i.e., under moderate humidification conditions). Therefore, the GDL characteristic parameter with the second highest water retention performance is selected from the preset GDL characteristic parameter table to generate the target anode GDL corresponding to the second humidification level. At this time, the cathode side needs a certain degree of air permeability to balance the transport of moisture and gas. The GDL characteristic parameter with the second highest air permeability is selected from the preset GDL characteristic parameter table to generate the target cathode GDL corresponding to the second humidification level.

[0091] Furthermore, at the third humidification level (i.e., under high humidification conditions), the moisture content inside the fuel cell is already sufficient, and a high water retention capacity is not required for the target anode GDL. Therefore, the GDL characteristic parameter with the lowest water retention capacity is selected from the preset GDL characteristic parameter table to generate the target anode GDL corresponding to the third humidification level. In addition, under high humidification conditions, the cathode side requires high permeability to ensure a sufficient supply of gas (such as oxygen) while avoiding excessive water vapor accumulation. Therefore, the GDL characteristic parameter with the highest permeability is selected from the preset GDL characteristic parameter table to generate the target cathode GDL corresponding to the third humidification level.

[0092] In step S203, multiple membrane electrodes are obtained based on the low oxygen evolution catalyst coating membrane of the membrane electrode under multiple humidification levels, the target anode GDL corresponding to each humidification level, and the target cathode GDL corresponding to each humidification level. The fuel cell performance of the multiple membrane electrodes is tested, and the target membrane electrode is determined from the multiple membrane electrodes according to the performance test results.

[0093] Specifically, multiple membrane electrodes can be obtained based on the low oxygen evolution catalyst coating membrane of the membrane electrode under multiple humidification levels, the target anode GDL corresponding to each humidification level, and the target cathode GDL corresponding to each humidification level.

[0094] Taking the aforementioned preset GDL characteristic parameter table 1 as an example, the four GDLs A, B, C, and D in the table can be sorted according to their breathability and water retention. Among them, the breathability of the four GDLs is sorted from high to low as C > D > B > A, while in terms of water retention, the order of the four GDLs is reversed, from low to high as C < D < B < A.

[0095] Furthermore, based on the above four GDL combinations, multiple membrane electrodes can be fabricated as shown in Table 2. Table 2 is a table of membrane electrodes composed of GDL combinations with different characteristics. The low oxygen evolution catalyst coating membrane structure is the same in each membrane electrode, and the anode platinum loading can be 0.1 mg / cm³. 2 The cathode platinum loading can be 0.4 mg / cm³. 2 .

[0096] Table 2

[0097] Membrane electrode Anode GDL Cathode GDL Sample 1 High water retention A Low gas permeability A Sample 2 Low water retention C High gas permeability C Sample 3 Medium water retention B Medium gas permeability D

[0098] Furthermore, fuel cell performance tests were conducted on multiple membrane electrodes, such as polarization curve testing and reverse polarity resistance testing. Based on the performance test results, the membrane electrode with the best performance was selected as the target membrane electrode.

[0099] Further, in some embodiments, determining the target membrane electrode from multiple membrane electrodes based on performance test results includes: determining the characteristic current density performance of the polarization curve corresponding to each membrane electrode and the anti-reverse polarization time corresponding to each membrane electrode based on the performance test results; determining the first membrane electrode with optimal polarization performance based on the characteristic current density performance of the polarization curve corresponding to each membrane electrode, and determining the second membrane electrode with optimal anti-reverse polarization capability based on the anti-reverse polarization time corresponding to each membrane electrode; determining whether the characteristic current density performance of the polarization curve corresponding to the first membrane electrode meets the preset performance requirements, and whether the anti-reverse polarization time corresponding to the second membrane electrode meets the preset anti-reverse polarization requirements; if the characteristic current density performance of the polarization curve corresponding to the first membrane electrode meets the preset performance requirements, and the anti-reverse polarization time corresponding to the second membrane electrode meets the preset anti-reverse polarization requirements, then the cathode GDL of the first membrane electrode is used as the cathode GDL of the target membrane electrode, and the anode GDL of the second membrane electrode is used as the anode GDL of the target membrane electrode to fabricate the target membrane electrode.

[0100] Optionally, the preset performance requirements and preset anti-reverse polarity requirements can be set by those skilled in the art according to the actual application, or by means of experiments, computer simulations, etc., and are not specifically limited here.

[0101] Specifically, based on the performance test results, the corresponding polarization curve and reverse polarization resistance curve for each membrane electrode are plotted. This allows the determination of the characteristic current density performance and reverse polarization resistance duration of the polarization curve for each membrane electrode. Based on the characteristic current density performance and reverse polarization resistance duration of the polarization curve for each membrane electrode, the first membrane electrode with the best polarization performance and the second membrane electrode with the best reverse polarization resistance are determined among multiple membrane electrodes. It is then determined whether the characteristic current density performance of the polarization curve for the first membrane electrode meets the preset performance requirements, and whether the reverse polarization resistance duration for the second membrane electrode meets the preset reverse polarization resistance requirements. If the performance of both the first and second membrane electrodes meets the preset requirements, the cathode GDL of the first membrane electrode is used as the cathode GDL of the target membrane electrode, and the anode GDL of the second membrane electrode is used as the anode GDL of the target membrane electrode. This allows the production of the target membrane electrode, which is then applied in actual production. This ensures that the final target membrane electrode has excellent polarization performance and reverse polarization resistance, thereby improving the overall performance and stability of the fuel cell.

[0102] For example, taking samples 1, 2, and 3 in Table 2 as examples, the reverse polarity resistance test was performed on samples 1, 2, and 3. The test conditions for the reverse polarity resistance test were: temperature 80℃, relative humidity 95%, pressure 250 kPa, and current density 0.2 A / cm². 2 With N2 / Air flow rate of 1.5 SLM / 1.0 SLM and termination voltage of 1.5 V, the reverse polarity test results are as follows: Figure 3As shown, it is clear that sample 1 has the best anti-reverse polarity, sample 3 has a moderate anti-reverse polarity, and sample 2 has the weakest anti-reverse polarity.

[0103] Furthermore, polarization performance tests were conducted on samples 1, 2, and 3. The test conditions were: temperature 75℃, humidity 40%-50%, pressure 260kPa-250kPa, and a stoichiometric ratio of 1.5-1.9. The results of the anti-reverse polarization test are as follows: Figure 4 As shown, sample 2 clearly has the best polarization performance, sample 3 has moderate polarization performance, and sample 1 has relatively weak polarization performance.

[0104] Based on the above test results, sample 1 has the best anti-reverse polarization capability, and sample 2 has the best polarization performance. Therefore, in the embodiment of this application, when fabricating the target membrane electrode, the anode GDL of sample 1 can be selected as the anode GDL of the target membrane electrode, and the cathode GDL of sample 2 can be selected as the cathode GDL of the target membrane electrode, thereby improving the performance and stability of the fuel cell.

[0105] Furthermore, in some embodiments, after determining whether the characteristic current density performance of the polarization curve corresponding to the first membrane electrode meets the preset performance requirements and whether the anti-reverse electrode duration corresponding to the second membrane electrode meets the preset anti-reverse electrode requirements, the method further includes: if the characteristic current density performance of the polarization curve corresponding to the first membrane electrode does not meet the preset performance requirements, or the anti-reverse electrode duration corresponding to the second membrane electrode does not meet the preset anti-reverse electrode requirements, then according to a preset increase strategy, the areal density parameter of the anode GDL of each membrane electrode and the porosity parameter of the cathode GDL of each membrane electrode are increased, and according to a preset decrease strategy, the porosity parameter of the anode GDL of each membrane electrode and the areal density parameter of the cathode GDL of each membrane electrode are decreased; fuel cell performance tests are performed on the adjusted membrane electrodes respectively until the characteristic current density performance of the polarization curve corresponding to the new first membrane electrode meets the preset performance requirements and the anti-reverse electrode duration corresponding to the new second membrane electrode meets the preset anti-reverse electrode requirements, and the cathode GDL of the new first membrane electrode is used as the cathode GDL of the target membrane electrode, and the anode GDL of the new second membrane electrode is used as the anode GDL of the target membrane electrode to fabricate the target membrane electrode.

[0106] Optionally, the preset increase strategy in this application embodiment can be to increase the porosity of the target cathode GDL by 5% on the existing basis, and increase the areal density of the target anode GDL by 5±5 g / m² on the existing basis. 2 The preset reduction strategy could be to reduce the porosity of the target anode GDL by 5% and the areal density of the target cathode GDL by 5 ± 5 g / m³. 2 No specific limitations are specified here.

[0107] Specifically, if the characteristic current density performance of the polarization curve corresponding to the first membrane electrode does not meet the preset performance requirements, or the anti-reverse electrode duration corresponding to the second membrane electrode does not meet the preset anti-reverse electrode requirements—that is, if the GDL performance of the optimized matching in the reference sample is unqualified, leading to an increase in areal impedance and mass transfer overpotential—then the performance parameters of the matched GDL need to be optimized based on the hydrophilicity / hydrophobicity exhibited in the test results. The performance parameters of the anode GDL and the cathode GDL of each membrane electrode are readjusted according to preset increase and decrease strategies. Specifically, according to the preset increase strategy, the areal density parameter of the anode GDL and the porosity parameter of the cathode GDL of each membrane electrode are increased; and according to the preset decrease strategy, the porosity parameter of the anode GDL and the areal density parameter of the cathode GDL of each membrane electrode are decreased. By adjusting these parameters, the performance of the fuel cell is further improved.

[0108] Furthermore, fuel cell performance tests, such as polarization curve testing and reverse polarity resistance testing, were conducted on multiple membrane electrodes after parameter adjustments. The new performance data provided by the test results were compared with the preset performance requirements and preset reverse polarity resistance requirements until the characteristic current density performance of the polarization curve corresponding to the new first membrane electrode met the preset performance requirements and the reverse polarity resistance duration corresponding to the new second membrane electrode met the preset reverse polarity resistance requirements. The cathode GDL of the new first membrane electrode was used as the cathode GDL of the target membrane electrode, and the anode GDL of the new second membrane electrode was used as the anode GDL of the target membrane electrode, thereby fabricating the target membrane electrode. That is, the new membrane electrode was fabricated using the cathode GDL and anode GDL that met the requirements, ensuring that the final fabricated target membrane electrode has excellent performance.

[0109] To facilitate a clearer and more intuitive understanding of the membrane electrode matching method of the embodiments of this application by those skilled in the art, the following is combined with... Figure 5 Please provide a detailed explanation.

[0110] like Figure 5 As shown, the membrane electrode matching method includes the following steps:

[0111] S501, Begin.

[0112] S502 determines the degree of humidification for low oxygen evolution CCM.

[0113] S503, select the matching GDL.

[0114] S504, performance test.

[0115] S505, evaluate whether the matching effect meets the product requirements. If yes, proceed to S507; otherwise, proceed to S506.

[0116] S506, optimize matching parameters.

[0117] S507, Implement the matching scheme.

[0118] S508, End.

[0119] Therefore, by matching the appropriate GDL to the catalyst coating film, not only is the battery performance improved, but the reverse polarity resistance of the membrane electrode is also enhanced.

[0120] According to the membrane electrode matching method proposed in this application, low oxygen evolution catalyst coating membranes (LECs) under multiple humidification levels are determined. Target anode (GDL) and target cathode (GDL) are matched for each humidification level, resulting in multiple membrane electrodes. Fuel cell performance tests are then performed on these multiple membrane electrodes, and a target membrane electrode is determined from among them based on the test results. This method improves battery performance by matching an appropriate gas diffusion layer to the catalyst coating membrane. While enhancing anti-reverse polarity capabilities, it also contributes to cost reduction and efficiency improvement in fuel cell products.

[0121] Next, the membrane electrode matching device according to the embodiments of this application is described with reference to the accompanying drawings.

[0122] Figure 6 This is a block diagram of a membrane electrode matching device according to an embodiment of this application.

[0123] like Figure 6 As shown, the membrane electrode matching device 10 includes: a determination module 100, a matching module 200, and a test module 300.

[0124] The module 100 is used to determine the low oxygen evolution catalyst coating membrane of the membrane electrode under multiple humidification levels; the matching module 200 is used to match the target anode GDL and the target cathode GDL corresponding to each humidification level from a preset GDL characteristic parameter table based on each humidification level; the testing module 300 is used to obtain multiple membrane electrodes based on the low oxygen evolution catalyst coating membrane of the membrane electrode under multiple humidification levels, the target anode GDL and the target cathode GDL corresponding to each humidification level, and to perform fuel cell performance tests on the multiple membrane electrodes respectively, and to determine the target membrane electrode from the multiple membrane electrodes based on the performance test results.

[0125] Further, in some embodiments, the testing module 300 is used to: determine the characteristic current density performance of the polarization curve corresponding to each membrane electrode and the anti-reverse polarization time corresponding to each membrane electrode based on the performance test results; determine the first membrane electrode with the best polarization performance based on the characteristic current density performance of the polarization curve corresponding to each membrane electrode, and determine the second membrane electrode with the best anti-reverse polarization capability based on the anti-reverse polarization time corresponding to each membrane electrode; determine whether the characteristic current density performance of the polarization curve corresponding to the first membrane electrode meets the preset performance requirements, and whether the anti-reverse polarization time corresponding to the second membrane electrode meets the preset anti-reverse polarization requirements; if the characteristic current density performance of the polarization curve corresponding to the first membrane electrode meets the preset performance requirements, and the anti-reverse polarization time corresponding to the second membrane electrode meets the preset anti-reverse polarization requirements, then the cathode GDL of the first membrane electrode is used as the cathode GDL of the target membrane electrode, and the anode GDL of the second membrane electrode is used as the anode GDL of the target membrane electrode to fabricate the target membrane electrode.

[0126] Furthermore, in some embodiments, after determining whether the characteristic current density performance of the polarization curve corresponding to the first membrane electrode meets the preset performance requirements, and whether the anti-reverse electrode duration corresponding to the second membrane electrode meets the preset anti-reverse electrode requirements, the test module 300 is further configured to: if the characteristic current density performance of the polarization curve corresponding to the first membrane electrode does not meet the preset performance requirements, or the anti-reverse electrode duration corresponding to the second membrane electrode does not meet the preset anti-reverse electrode requirements, then according to a preset increase strategy, increase the areal density parameter of the anode GDL of each membrane electrode and the porosity parameter of the cathode GDL of each membrane electrode, and according to a preset decrease strategy, decrease the porosity parameter of the anode GDL of each membrane electrode and the areal density parameter of the cathode GDL of each membrane electrode; perform fuel cell performance tests on the adjusted membrane electrodes respectively, until the characteristic current density performance of the polarization curve corresponding to the new first membrane electrode meets the preset performance requirements, and the anti-reverse electrode duration corresponding to the new second membrane electrode meets the preset anti-reverse electrode requirements, and use the cathode GDL of the new first membrane electrode as the cathode GDL of the target membrane electrode, and use the anode GDL of the new second membrane electrode as the anode GDL of the target membrane electrode to fabricate the target membrane electrode.

[0127] Furthermore, in some embodiments, the multiple humidification levels include a first to a third humidification level, wherein the relative humidity of the first humidification level is less than the relative humidity of the second humidification level, and the relative humidity of the second humidification level is less than the relative humidity of the third humidification level.

[0128] Further, in some embodiments, the determining module 100 is used to: obtain a baseline GDL; perform humidity sensitivity tests on multiple membrane electrode low oxygen evolution catalyst coating films to be evaluated based on the first to third humidification levels, matching the baseline GDL, and obtain humidity sensitivity test results; and, based on the humidity sensitivity test results, select membrane electrode low oxygen evolution catalyst coating films to be evaluated that meet preset performance characteristics and correspond to the first to third humidification levels respectively, thereby obtaining membrane electrode low oxygen evolution catalyst coating films under multiple humidification levels.

[0129] Further, in some embodiments, the matching module 200 is configured to: for a first humidification level, select the GDL characteristic parameter with the highest water retention performance from a preset GDL characteristic parameter table to generate the target anode GDL corresponding to the first humidification level, and select the GDL characteristic parameter with the lowest air permeability from the preset GDL characteristic parameter table to generate the target cathode GDL corresponding to the first humidification level; for a second humidification level, select the GDL characteristic parameter with the second highest water retention performance from the preset GDL characteristic parameter table to generate the target anode GDL corresponding to the second humidification level, and select the GDL characteristic parameter with the second highest air permeability from the preset GDL characteristic parameter table to generate the target cathode GDL corresponding to the second humidification level; for a third humidification level, select the GDL characteristic parameter with the lowest water retention performance from the preset GDL characteristic parameter table to generate the target anode GDL corresponding to the third humidification level, and select the GDL characteristic parameter with the highest air permeability from the preset GDL characteristic parameter table to generate the target cathode GDL corresponding to the third humidification level.

[0130] It should be noted that the foregoing explanation of the membrane electrode matching method embodiment also applies to the membrane electrode matching device of this embodiment, and will not be repeated here.

[0131] According to the membrane electrode matching device proposed in this application, low oxygen evolution catalyst coating membranes (LECs) under multiple humidification levels are determined. Target anode (GDL) and target cathode (GDL) are matched for each humidification level, resulting in multiple membrane electrodes. Fuel cell performance tests are then performed on these multiple membrane electrodes, and a target membrane electrode is determined from among them based on the test results. This method improves battery performance by matching an appropriate gas diffusion layer to the catalyst coating membrane. While enhancing anti-reverse polarity capabilities, it also contributes to cost reduction and efficiency improvement in fuel cell products.

[0132] Figure 7 A schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device may include:

[0133] The memory 701, the processor 702, and the computer program stored on the memory 701 and executable on the processor 702.

[0134] When the processor 702 executes the program, it implements the membrane electrode matching method provided in the above embodiments.

[0135] Furthermore, electronic devices also include:

[0136] Communication interface 703 is used for communication between memory 701 and processor 702.

[0137] The memory 701 is used to store computer programs that can run on the processor 702.

[0138] The memory 701 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0139] If the memory 701, processor 702, and communication interface 703 are implemented independently, then the communication interface 703, memory 701, and processor 702 can be interconnected via a bus to complete communication between them. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of representation, Figure 7 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0140] Optionally, in a specific implementation, if the memory 701, processor 702, and communication interface 703 are integrated on a single chip, then the memory 701, processor 702, and communication interface 703 can communicate with each other through an internal interface.

[0141] The processor 702 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.

[0142] This embodiment also provides a computer-readable storage medium storing computer program code. When the computer program code is run on a computer, the computer executes the above-described related method steps to implement the membrane electrode matching method provided in the above embodiment.

[0143] Through the above description of the embodiments, those skilled in the art will understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0144] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0145] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A membrane electrode matching method characterized by, The method comprises the following steps: determining a plurality of membrane electrode low-oxygen evolution catalyst coating membranes under a plurality of humidification degrees; based on each humidification degree, matching a target anode GDL corresponding to the each humidification degree and a target cathode GDL corresponding to the each humidification degree from a preset GDL characteristic parameter table; based on the plurality of membrane electrode low-oxygen evolution catalyst coating membranes under the plurality of humidification degrees, the target anode GDL corresponding to the each humidification degree and the target cathode GDL corresponding to the each humidification degree, obtaining a plurality of membrane electrodes, respectively performing fuel cell performance tests on the plurality of membrane electrodes, and determining a target membrane electrode from the plurality of membrane electrodes according to the performance test results.

2. The method of claim 1, wherein, The determining a target membrane electrode from the plurality of membrane electrodes according to the performance test results comprises: determining a polarization curve characteristic current density performance of each membrane electrode and an anti-reversal time length of the each membrane electrode according to the performance test results; determining a first membrane electrode with optimal polarization performance based on the polarization curve characteristic current density performance of the each membrane electrode, and determining a second membrane electrode with optimal anti-reversal capability based on the anti-reversal time length of the each membrane electrode; determining whether the polarization curve characteristic current density performance of the first membrane electrode meets a preset performance requirement and whether the anti-reversal time length of the second membrane electrode meets a preset anti-reversal requirement; if the polarization curve characteristic current density performance of the first membrane electrode meets the preset performance requirement and the anti-reversal time length of the second membrane electrode meets the preset anti-reversal requirement, taking a cathode GDL of the first membrane electrode as a cathode GDL of the target membrane electrode, taking an anode GDL of the second membrane electrode as an anode GDL of the target membrane electrode, and manufacturing the target membrane electrode.

3. The method of claim 2, wherein, After determining whether the polarization curve characteristic current density performance of the first membrane electrode meets the preset performance requirement and whether the anti-reversal time length of the second membrane electrode meets the preset anti-reversal requirement, the method further comprises: if the polarization curve characteristic current density performance of the first membrane electrode does not meet the preset performance requirement or the anti-reversal time length of the second membrane electrode does not meet the preset anti-reversal requirement, increasing a surface density parameter of the anode GDL of the each membrane electrode and a porosity parameter of the cathode GDL of the each membrane electrode according to a preset increasing strategy, and decreasing the porosity parameter of the anode GDL of the each membrane electrode and the surface density parameter of the cathode GDL of the each membrane electrode according to a preset decreasing strategy; respectively performing fuel cell performance tests on the plurality of membrane electrodes after adjustment until a polarization curve characteristic current density performance of a new first membrane electrode meets the preset performance requirement and an anti-reversal time length of a new second membrane electrode meets the preset anti-reversal requirement, taking the cathode GDL of the new first membrane electrode as a cathode GDL of the target membrane electrode, taking the anode GDL of the new second membrane electrode as an anode GDL of the target membrane electrode, and manufacturing the target membrane electrode.

4. The method of claim 1, wherein, The plurality of humidification levels comprises first to third humidification levels, wherein the relative humidity of the first humidification level is less than the relative humidity of the second humidification level, and the relative humidity of the second humidification level is less than the relative humidity of the third humidification level.

5. The method of claim 4, wherein, The determination of the membrane electrode low-oxygen catalyst coating film under the plurality of humidification levels comprises: Obtaining a reference GDL; Based on the first to third humidification levels, a plurality of to-be-evaluated membrane electrode low-oxygen catalyst coating films are matched with the reference GDL for humidity sensitivity test, and humidity sensitivity test results are obtained; Based on the humidity sensitivity test results, to-be-evaluated membrane electrode low-oxygen catalyst coating films that meet the preset performance and correspond to the first to third humidification levels are screened out, and the membrane electrode low-oxygen catalyst coating films under the plurality of humidification levels are obtained.

6. The method of claim 1, wherein, The matching of the target anode GDL corresponding to each humidification level and the target cathode GDL corresponding to each humidification level from the preset GDL characteristic parameter table based on each humidification level comprises: For the first humidification level, the GDL characteristic parameter with the highest water retention performance is selected from the preset GDL characteristic parameter table to generate the target anode GDL corresponding to the first humidification level, and the GDL characteristic parameter with the lowest gas permeability performance is selected from the preset GDL characteristic parameter table to generate the target cathode GDL corresponding to the first humidification level; For the second humidification level, the GDL characteristic parameter with the second highest water retention performance is selected from the preset GDL characteristic parameter table to generate the target anode GDL corresponding to the second humidification level, and the GDL characteristic parameter with the second highest gas permeability performance is selected from the preset GDL characteristic parameter table to generate the target cathode GDL corresponding to the second humidification level; For the third humidification level, the GDL characteristic parameter with the lowest water retention performance is selected from the preset GDL characteristic parameter table to generate the target anode GDL corresponding to the third humidification level, and the GDL characteristic parameter with the highest gas permeability performance is selected from the preset GDL characteristic parameter table to generate the target cathode GDL corresponding to the third humidification level.

7. A membrane electrode matching device, characterized by Comprise: A determination module for determining a membrane electrode low-oxygen catalyst coating film under a plurality of humidification levels; A matching module for matching a target anode GDL corresponding to each humidification level and a target cathode GDL corresponding to each humidification level from a preset GDL characteristic parameter table based on each humidification level; A test module for obtaining a plurality of membrane electrodes based on the membrane electrode low-oxygen catalyst coating film under the plurality of humidification levels, the target anode GDL corresponding to each humidification level, and the target cathode GDL corresponding to each humidification level, respectively performing fuel cell performance tests on the plurality of membrane electrodes, and determining a target membrane electrode from the plurality of membrane electrodes according to the performance test results.

8. The apparatus of claim 7, wherein, The test module is configured to: Determine the polarization curve characteristic current density performance corresponding to each membrane electrode and the anti-reverse polarity duration of each membrane electrode according to the performance test results. determine a first membrane electrode with optimal polarization performance based on the polarization curve characteristic current density performance of each membrane electrode, and determine a second membrane electrode with optimal anti-reverse polarization capability based on the anti-reverse polarization duration of each membrane electrode; determine whether the polarization curve characteristic current density performance of the first membrane electrode meets the preset performance requirement, and whether the anti-reverse polarization duration of the second membrane electrode meets the preset anti-reverse polarization requirement; if the polarization curve characteristic current density performance of the first membrane electrode meets the preset performance requirement, and the anti-reverse polarization duration of the second membrane electrode meets the preset anti-reverse polarization requirement, then the cathode GDL of the first membrane electrode is used as the cathode GDL of the target membrane electrode, and the anode GDL of the second membrane electrode is used as the anode GDL of the target membrane electrode to manufacture the target membrane electrode.

9. An electronic device, comprising: comprise: a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor executes the program to implement the membrane electrode matching method according to any one of claims 1-6.

10. A computer-readable storage medium having stored thereon a computer program, characterized in that, The program is executed by the processor to implement the membrane electrode matching method according to any one of claims 1-6.

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