Test system of electrolytic cell diaphragm for hydrogen production
By designing an electrolytic cell diaphragm testing system, the electrode position and electrolyte volume are controlled by limiting components and liquid inlet equipment, solving the problems of inconsistent and unstable conductivity testing, and realizing accurate evaluation and screening of diaphragm performance.
Patent Information
- Application Number
- CN202422677814.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-04
AI Technical Summary
In the prior art, the conductivity test results of the electrolyzer diaphragm are inconsistent, unstable and inaccurate, which affects the efficiency and energy efficiency of the electrolyzer.
A testing system for the diaphragm of an electrolyzer for hydrogen production was designed, including a first electrolyzer, a second electrolyzer, connecting pipes, a diaphragm, electrodes, and a liquid inlet device. The conductivity of the diaphragm is measured by an electrochemical workstation, and the electrode position and electrolyte volume are controlled by limiting components and the liquid inlet device to ensure stable testing conditions.
It improves the accuracy, stability and consistency of diaphragm conductivity testing, enabling accurate evaluation of diaphragm performance and selection of suitable diaphragms.
Smart Images
Figure CN223500927U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water electrolysis technology, and in particular to a testing system for the diaphragm of an electrolyzer for hydrogen production. Background Technology
[0002] Hydrogen energy, as a clean secondary energy source, boasts advantages such as high energy density, zero pollution, and zero carbon emissions, helping to address issues like the energy crisis and environmental pollution. As a hydrogen production technology, water electrolysis offers advantages such as high purity, no pollution, and strong controllability, providing a simple, effective, and promising method for hydrogen production.
[0003] In water electrolysis, a diaphragm separates the cathode and anode, preventing the mixing of hydrogen produced at the cathode and oxygen produced at the anode, while also providing a channel for ion transport between the two. Electrical conductivity, a crucial physical parameter of the diaphragm, directly affects the internal resistance of the electrolyzer, thus influencing its efficiency and energy efficiency. Therefore, it is essential to test the diaphragm's conductivity to determine its suitability for water electrolysis. However, current diaphragm conductivity testing systems suffer from drawbacks such as inconsistent, unstable, and inaccurate results. Utility Model Content
[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a testing system for the diaphragm of an electrolyzer for hydrogen production, which can accurately test the conductivity of the diaphragm and avoid changes in test conditions during the test process, thereby improving the consistency, stability and accuracy of the test results.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.
[0006] This utility model provides a testing system for the diaphragm of an electrolyzer for hydrogen production, comprising at least:
[0007] First electrolytic cell;
[0008] The second electrolytic cell is disposed on one side of the first electrolytic cell, and electrolyte is disposed in both the first and second electrolytic cells;
[0009] Connecting pipelines to link the first electrolytic cell and the second electrolytic cell;
[0010] A diaphragm is disposed in the connecting pipeline;
[0011] Multiple electrodes, one end of which extends into the first electrolytic cell or the second electrolytic cell, and the other end of which extends out of the first electrolytic cell or the second electrolytic cell, with at least one of the electrodes disposed in the first electrolytic cell and the second electrolytic cell respectively;
[0012] The liquid inlet device is internally connected to the first electrolytic cell and the second electrolytic cell; and
[0013] An electrochemical workstation is electrically connected to the electrode.
[0014] In one embodiment of the present invention, the plurality of electrodes include a first working electrode, a second working electrode, and a reference electrode. The first working electrode is disposed in the first electrolytic cell, and the second working electrode and the reference electrode are each disposed in the second electrolytic cell.
[0015] In one embodiment of the present invention, the first electrolytic cell includes a first shell and a first cover plate, one end of the first shell is open and the first shell is detachably placed in the opening direction of the first shell; the second electrolytic cell includes a second shell and a second cover plate, one end of the second shell is open and the second shell is detachably placed in the opening direction of the second shell.
[0016] In one embodiment of the present invention, the first electrolytic cell further includes a first hole that penetrates the first cover plate, and the shape and size of the first hole are the same as the shape and size of the clamping portion of the first working electrode.
[0017] In one embodiment of the present invention, the second electrolytic cell further includes a second hole and a third hole, each of which penetrates the second cover plate. The shape and size of the second hole are the same as the shape and size of the clamping portion of the second working electrode, and the shape and size of the third hole are the same as the shape and size of the clamping portion of the reference electrode.
[0018] In one embodiment of the present invention, the testing system further includes a plurality of limiting members, which are sleeved on the first working electrode outside the first electrolytic cell, the second working electrode outside the second electrolytic cell, and the reference electrode outside the second electrolytic cell, and the limiting members are disposed close to the first cover plate or the second cover plate.
[0019] In one embodiment of this utility model, the limiting member includes a first limiting member, a second limiting member, and a third limiting member. The first limiting member is sleeved on the clamping portion of the first working electrode located outside the first electrolytic cell, adjacent to the first hole. The second limiting member is sleeved on the clamping portion of the second working electrode located outside the second electrolytic cell, adjacent to the second hole. The third limiting member is sleeved on the clamping portion of the reference electrode located outside the second electrolytic cell, adjacent to the third hole.
[0020] In one embodiment of the present invention, the liquid inlet device includes a first liquid inlet pipe and a second liquid inlet pipe, wherein the outlet of the first liquid inlet pipe is connected to the interior of the first electrolytic cell, and the outlet of the second liquid inlet pipe is connected to the interior of the second electrolytic cell.
[0021] In one embodiment of the present invention, the liquid inlet device further includes a first container and a second container. The first container is disposed at the end of the first liquid inlet pipe away from the first electrolytic cell, and the second container is disposed at the end of the second liquid inlet pipe away from the second electrolytic cell.
[0022] In one embodiment of the present invention, the liquid inlet device further includes a transfer pump, which is disposed on the first liquid inlet pipeline and the second liquid inlet pipeline.
[0023] In summary, this invention provides a testing system for the diaphragm of an electrolyzer for hydrogen production. This system can accurately test the conductivity of the diaphragm and use conductivity as a reference standard to accurately evaluate the diaphragm's performance and perform diaphragm screening. Furthermore, the testing system provided by this invention can prevent changes in testing conditions during the testing process, thereby improving the consistency, stability, and reliability of the test results.
[0024] Of course, implementing any of the methods of this utility model does not necessarily require achieving all of the advantages described above at the same time. Attached Figure Description
[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is a schematic diagram of a testing system for the diaphragm of an electrolyzer for hydrogen production in one embodiment of this utility model.
[0027] Figure 2 This is a schematic diagram of a test system for the diaphragm of an electrolyzer for hydrogen production, according to another embodiment of the present invention.
[0028] Figure 3 This is a flowchart of a testing method for the diaphragm of an electrolyzer for hydrogen production in one embodiment of the present invention.
[0029] Label Explanation:
[0030] 10. First electrolytic cell; 101. First cover plate; 102. First shell; 103. First hole; 20. Second electrolytic cell; 201. Second cover plate; 202. Second shell; 203. Second hole; 204. Third hole; 30. Connecting pipe; 40. Gasket; 50. Diaphragm; 60. Electrode; 601. First working electrode; 6011. First clamping part; 6012. First active part; 602. Second working electrode ; 6021, Second clamping part; 6022, Second active part; 603, Reference electrode; 6031, Third clamping part; 6032, Third active part; 70, Liquid inlet device; 701, First liquid inlet pipeline; 702, Second liquid inlet pipeline; 703, First container; 704, Second container; 705, Transfer pump; 80, Electrochemical workstation; 901, First limiting member; 902, Second limiting member; 903, Third limiting member. Detailed Implementation
[0031] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.
[0032] It should be understood that this invention can be embodied in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of this invention to those skilled in the art.
[0033] The technical solution of this utility model will be further described in detail below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0034] Please see Figure 1As shown, this utility model provides a testing system for the diaphragm of an electrolyzer for hydrogen production, comprising at least a first electrolyzer 10, a second electrolyzer 20, a connecting pipe 30, a diaphragm 50, an electrode 60, and a liquid inlet device 70. The second electrolyzer 20 is disposed on one side of the first electrolyzer 10. The connecting pipe 30 connects the first electrolyzer 10 and the second electrolyzer 20. The diaphragm 50 is disposed within the connecting pipe 30. One end of the electrode 60 extends into the first electrolyzer 10 or the second electrolyzer 20, and the other end extends outside the first electrolyzer 10 or the second electrolyzer 20. The liquid inlet device 70 communicates with the interiors of the first electrolyzer 10 and the second electrolyzer 20, supplying electrolyte to both. In the testing system provided by this invention, the first electrolytic cell 10 and the second electrolytic cell 20 can control the electrode 60 to remain stationary during the test, ensuring that its relative position within the first electrolytic cell 10 or the second electrolytic cell 20 does not change. This guarantees that the immersion area of the electrode 60 in the electrolyte within the electrolytic cell remains constant, thereby improving the consistency, reliability, and accuracy of the test results. Furthermore, in the testing system provided by this invention, the liquid inlet device 70 can control the volume of the electrolyte in the first electrolytic cell 10 and the second electrolytic cell 20 to remain at a fixed value, further improving the consistency, reliability, and accuracy of the test results.
[0035] It is worth noting that the testing system and method of this application can be applied to, but are not limited to, membrane testing in water electrolysis for hydrogen production, seawater hydrogen production, or other hydrogen production electrolyzers.
[0036] Please see Figure 1 As shown, in one embodiment of this utility model, the first electrolytic cell 10 includes, for example, a first cover plate 101, a first housing 102, and a first hole 103. The first housing 102 has an opening at one end to facilitate cleaning and observation of its interior. The first cover plate 101 is detachably disposed in the opening direction of the first housing 102. The first cover plate 101 and the first housing 102 are detachably connected, for example, by a connection structure such as threads, snaps, or pins (not shown in the figure), to prevent the electrolyte inside the first housing 102 from evaporating or becoming contaminated. The material of the first cover plate 101 is, for example, an elastic material or a non-elastic material. The first hole 103 penetrates the first cover plate 101. The shape and size of the first hole 103 are the same as the shape and size of the cross-section of the electrode 60, so that the electrode 60 can be inserted into the first electrolytic cell 10 through the first hole 103. In this embodiment, the material of the first cover plate 101 is, for example, an elastic material. With the elasticity of the first cover plate 101, the movement of the electrode 60 within the first hole 103 can be restricted, so as to avoid changes in the relative position of the electrode 60 within the first housing 102 and the relative position between the electrodes 60, thus ensuring that the immersion area of the electrode 60 in the electrolyte remains unchanged, thereby improving the consistency, stability and accuracy of the test results.
[0037] Please see Figure 1 As shown, in one embodiment of this utility model, a second electrolytic cell 20 is disposed on one side of the first electrolytic cell 10. The second electrolytic cell 20 includes, for example, a second cover plate 201, a second housing 202, a second hole 203, and a third hole 204. In this embodiment, one end of the second housing 202 is open to facilitate cleaning and observation of its interior. The second cover plate 201 is detachably disposed in the opening direction of the second housing 202. The second cover plate 201 and the second housing 202 are detachably connected, for example, by a connection structure such as threads, snaps, or pins (not shown in the figure), to prevent the electrolyte inside the second housing 202 from evaporating or becoming contaminated. The material of the second cover plate 201 is, for example, an elastic material or a non-elastic material. The second hole 203 and the third hole 204 each penetrate the second cover plate 201, so that an electrode 60 can be inserted into the second electrolytic cell 20 through the second hole 203, and another electrode 60 can be inserted into the second electrolytic cell 20 through the third hole 204. In this embodiment, the material of the second cover plate 201 is, for example, an elastic material. With the elasticity of the second cover plate 201, the movement of the electrode 60 in the second hole 203 and the third hole 204 can be restricted, so as to avoid changes in the relative position of the electrode 60 in the second housing 202 and the relative position between the electrodes 60, and to ensure that the immersion area of the electrode 60 in the electrolyte remains unchanged, thereby improving the consistency, stability and accuracy of the test results.
[0038] Please see Figure 1As shown, in one embodiment of this utility model, one end of the electrode 60 extends into the first electrolytic cell 10 or the second electrolytic cell 20, and the other end extends outside the first electrolytic cell 10 or the second electrolytic cell 20. For example, there are multiple electrodes 60, with at least one electrode 60 disposed in each of the first electrolytic cell 10 and the second electrolytic cell 20. In this embodiment, for example, there are three electrodes 60, which are, for example, a first working electrode 601, a second working electrode 602, and a reference electrode 603. The first working electrode 601 and the second working electrode 602 have opposite polarities; the example given is that the first working electrode 601 is an oxygen-evolving anode and the second working electrode 602 is a hydrogen-evolving cathode. Specifically, the first working electrode 601 is inserted into the electrolyte within the first electrolytic cell 10 through the first hole 103. The first working electrode 601 includes, for example, a first clamping portion 6011 and a first active portion 6012. The first active portion 6012 is immersed in the electrolyte. The first clamping portion 6011 extends from the first active portion 6012 towards the first cover plate 101 and extends through the first hole 103 to the outside of the first electrolytic cell 10. Furthermore, the shape and size of the cross-section of the first clamping portion 6011 are the same as the shape and size of the first hole 103, so that the first hole 103 and the first clamping portion 6011 are mutually matched. By matching the first hole 103 and the first clamping portion 6011, movement of the first working electrode 601 within the first electrolytic cell 10 can be prevented, ensuring that the relative position of the first working electrode 601 within the second electrolytic cell 20 remains unchanged. This guarantees that the immersion area of the first working electrode 601 in the electrolyte remains constant, thereby improving the consistency, stability, and accuracy of the test results.
[0039] Please see Figure 1 As shown, in one embodiment of the present invention, the second working electrode 602 is inserted into the electrolyte in the second electrolytic cell 20 through the second hole 203. The second working electrode 602 includes, for example, a second clamping part 6021 and a second active part 6022. The second active part 6022 is immersed in the electrolyte. The second clamping part 6021 extends from the second active part 6022 in the direction of the second cover plate 201 and extends through the second hole 203 to the outside of the second electrolytic cell 20. Moreover, the shape and size of the cross-section of the second clamping part 6021 are the same as the shape and size of the second hole 203, so that the second hole 203 and the second clamping part 6021 match each other. By matching the second hole 203 and the second clamping part 6021, the movement of the second working electrode 602 within the second electrolytic cell 20 can be prevented, ensuring that the relative position of the second working electrode 602 within the second electrolytic cell 20 does not change, thus guaranteeing that the immersion area of the second working electrode 602 in the electrolyte remains unchanged, thereby improving the consistency, stability and accuracy of the test results.
[0040] Please see Figure 1As shown, in one embodiment of this utility model, the reference electrode 603 is, for example, a silver / silver chloride electrode, a saturated calomel electrode, a mercury / mercuric oxide electrode, or a mercury / mercurous sulfate electrode. The reference electrode 603 is inserted into the electrolyte in the second electrolytic cell 20 through the third hole 204. The reference electrode 603 includes, for example, a third clamping part 6031 and a third active part 6032. The third active part 6032 is immersed in the electrolyte. The third clamping part 6031 extends from the third active part 6032 in the direction of the second cover plate 201 and extends through the third hole 204 to the outside of the second electrolytic cell 20. Moreover, the shape and size of the cross-section of the third clamping part 6031 are the same as the shape and size of the third hole 204, so that the third hole 204 and the third clamping part 6031 match each other. By matching the third hole 204 and the third clamping part 6031, the reference electrode 603 can be prevented from moving within the second electrolytic cell 20. This ensures that the relative position of the reference electrode 603 within the second electrolytic cell 20, as well as the relative position between the reference electrode 603, the first working electrode 601, and the second working electrode 602, remains unchanged, thus guaranteeing that the immersion area of the reference electrode 603 in the electrolyte remains constant, thereby improving the consistency, stability, and accuracy of the test results.
[0041] Please see Figure 1 As shown, in one embodiment of this utility model, the connecting pipe 30 connects the first electrolytic cell 10 and the second electrolytic cell 20. Specifically, the connecting pipe 30 connects the first housing 102 and the second housing 202. By setting the first electrolytic cell 10, the second electrolytic cell 20, and the connecting pipe 30 to form an H-type electrolytic cell, the first working electrode 601 and the second working electrode 602 can be independently controlled, thereby independently controlling the electrolysis rate on the first working electrode 601 and the second working electrode 602, thus improving the flexibility of the testing system.
[0042] Please see Figure 1 As shown, in one embodiment of this invention, a gasket 40 is also provided on the connecting pipe 30. This invention does not limit the shape of the gasket 40; the size of the gasket 40 is larger than the size of the diaphragm 50 to facilitate the placement of the diaphragm 50 within the gasket 40. By providing the gasket 40, the sealing performance of the testing system can be increased, preventing electrolyte leakage between the connecting pipe 30 and the diaphragm 50.
[0043] Please see Figure 1As shown, in one embodiment of this invention, a diaphragm 50 is disposed in the connecting pipe 30. Specifically, the diaphragm 50 is disposed in the gasket 40, and the diaphragm 50 is, for example, a cation exchange membrane, an anion exchange membrane, a proton exchange membrane, a porous membrane, or other membrane layers that can be used for hydrogen electrolysis. The diaphragm 50 is used to separate the first working electrode 601 and the second working electrode 602, preventing the generated hydrogen and oxygen from mixing, while providing a transport channel for ions. The conductivity of the diaphragm 50 is an important physical parameter reflecting the electrolyte's ion transport capacity and directly affecting the efficiency of the water electrolysis device. Therefore, the conductivity of the diaphragm 50 must be tested to evaluate its performance.
[0044] Please see Figure 1 As shown, in one embodiment of this utility model, the liquid inlet device 70 is internally connected to the first electrolytic cell 10 and the second electrolytic cell 20. By providing the liquid inlet device 70, electrolyte is transferred into the first electrolytic cell 10 and the second electrolytic cell 20 before the test begins. The electrolyte includes, for example, at least water and an electrolyte, such as an acidic or alkaline electrolyte, to increase the conductivity of the aqueous solution and improve the gas production rate of the water electrolysis device. The acidic electrolyte includes, for example, at least one of sulfuric acid, and the alkaline electrolyte includes, for example, at least one of potassium hydroxide and sodium hydroxide.
[0045] Please see Figure 1 As shown, in this embodiment, the liquid inlet device 70 includes, for example, a first liquid inlet pipe 701, a second liquid inlet pipe 702, a first container 703, a second container 704, and a transfer pump 705. The outlet of the first liquid inlet pipe 701 is connected to the interior of the first electrolytic cell 10, and the outlet of the second liquid inlet pipe 702 is connected to the interior of the second electrolytic cell 20. Specifically, the first liquid inlet pipe 701 extends through the first cover plate 101 into the first housing 102, and the second liquid inlet pipe 702 extends through the second cover plate 201 into the second housing 202.
[0046] Please see Figure 1 As shown, in one embodiment of this utility model, a first container 703 is disposed at the end of the first liquid inlet pipe 701 away from the first electrolytic cell 10, and a second container 704 is disposed at the end of the second liquid inlet pipe 702 away from the second electrolytic cell 20. Specifically, the first container 703 is connected to the inlet of the first liquid inlet pipe 701, and the second container 704 is connected to the inlet of the second liquid inlet pipe 702. Electrolyte is stored in both the first container 703 and the second container 704 to provide electrolyte for the first electrolytic cell 10 and the second electrolytic cell 20.
[0047] Please see Figure 1As shown, in one embodiment of this utility model, a transfer pump 705 is installed on the first inlet pipe 701 and the second inlet pipe 702 to increase the pressure of the electrolyte transferred in the first inlet pipe 701 and the second inlet pipe 702, so that the electrolyte can be smoothly transferred into the first electrolytic cell 10 and the second electrolytic cell 20. Specifically, the transfer pump 705 is, for example, a multi-channel peristaltic pump, so that the transfer pump 705 can simultaneously control the flow of electrolyte in the first inlet pipe 701 and the second inlet pipe 702, thereby precisely controlling the volume of electrolyte transferred by the liquid feeding device 70 into the first electrolytic cell 10 and the second electrolytic cell 20 to be consistent before each test, improving the consistency, reliability and accuracy of the test results.
[0048] Please see Figure 1 As shown, in one embodiment of this utility model, the testing system further includes an electrochemical workstation 80, which is electrically connected to the electrode 60. While providing current to the electrode 60, the electrochemical workstation 80 can also measure the resistance of the electrolyte in the first electrolytic cell 10 and the second electrolytic cell 20 to determine the conductivity of the diaphragm 50. In this embodiment, the first working electrode 601, the second working electrode 602, and the reference electrode 603 are each electrically connected to the electrochemical workstation 80. Specifically, the first working electrode 601 is connected to the anode of the electrochemical workstation 80, and the second working electrode 602 and the reference electrode 603 are each connected to the cathode of the electrochemical workstation 80. By setting the first working electrode 601, the second working electrode 602, the reference electrode 603, and the electrochemical workstation 80, a three-electrode, two-loop system can be constructed. The first working electrode 601 and the second working electrode 602 form a complete circuit, enabling the oxygen evolution reaction on the first working electrode 601 and the hydrogen evolution reaction on the second working electrode 602 to proceed normally. The first working electrode 601 and the reference electrode 603 form another working circuit, which can provide a stable potential reference point for the first working electrode 601 and improve the reliability and stability of the test results.
[0049] Please see Figure 2As shown, in another embodiment of this utility model, the testing system further includes a limiting member, which is disposed on the electrode 60 outside the first electrolytic cell 10 or the second electrolytic cell 20, and is disposed close to the first cover plate 101 or the second cover plate 201. For example, there may be multiple limiting members. In this embodiment, there are, for example, three limiting members, including a first limiting member 901, a second limiting member 902, and a third limiting member 903. The first limiting member 901 is sleeved on the first clamping part 6011 located outside the first electrolytic cell 10, adjacent to the first hole 103. The second limiting member 902 is sleeved on the second clamping part 6021 located outside the second electrolytic cell 20, adjacent to the second hole 203. The third limiting member 903 is sleeved on the third clamping part 6031 located outside the second electrolytic cell 20, adjacent to the third hole 204. The size of the first limiting member 901 is larger than the size of the first hole 103, the size of the second limiting member 902 is larger than the size of the second hole 203, and the size of the third limiting member 903 is larger than the size of the third hole 204, so as to prevent the limiting members from falling into the electrolytic cell from the holes. By setting a limiting component, the electrode 60 can be prevented from moving, so that the relative position of the electrode 60 in the first electrolytic cell 10 or the second electrolytic cell 20 will not change, thereby ensuring that the immersion area of the electrode 60 in the electrolyte in the electrolytic cell remains unchanged, thus improving the consistency, stability and accuracy of the test results.
[0050] Please see Figures 1 to 3 As shown, in order to further explain the testing system for the electrolyzer diaphragm for hydrogen production provided by this utility model, the testing method for the electrolyzer diaphragm for hydrogen production is described in detail below. The testing method includes at least steps S11-S13.
[0051] S11. Remove the diaphragm from the connecting pipeline, start the electrochemical workstation, and obtain the reference resistance of the electrolyte.
[0052] S12. Place the diaphragm in the connecting pipeline, start the electrochemical workstation, and obtain the measured resistance of the electrolyte.
[0053] S13. Obtain the conductivity of the diaphragm based on the reference resistance and the measured resistance.
[0054] Please see Figures 1 to 3 As shown, in one embodiment of the present invention, in step S11, the diaphragm 50 in the connecting pipe 30 is removed, the electrochemical workstation 80 is started to apply an anodic current to the first working electrode 601, and a cathode current is applied to the second working electrode 602 and the reference electrode 603. Then, the reference resistance R1 of the blank electrolyte is measured by the electrochemical workstation 80.
[0055] Please see Figures 1 to 3As shown, in one embodiment of the present invention, in step S12, the diaphragm 50 is placed in the connecting pipe 30, the electrochemical workstation 80 is started to apply an anodic current to the first working electrode 601, and a cathode current is applied to the second working electrode 602 and the reference electrode 603, and the measuring resistance R2 of the electrolyte is obtained again through the electrochemical workstation 80.
[0056] Please refer to 1 to Figure 3 As shown, in one embodiment of this utility model, after obtaining the reference resistor R1 and the measuring resistor R2, in step S13, the conductivity of the diaphragm 50 is calculated according to the following formula, and the performance of the diaphragm 50 is evaluated using the conductivity as an indicator.
[0057] Electrical conductivity = L / [S*(R2-R1)];
[0058] Where L is the thickness of diaphragm 50, S is the surface area of diaphragm 50, R1 is the reference resistor, and R2 is the measuring resistor.
[0059] In summary, this invention provides a testing system for the diaphragm of an electrolyzer for hydrogen production, capable of accurately testing the conductivity of the diaphragm to accurately evaluate its performance. Furthermore, the testing system provided by this invention, through the electrolyzer, the liquid inlet device, and the limiting components, can control parameters such as the volume of the electrolyte in the electrolyzer and the area of the electrode immersed in the electrolyte to remain constant, thereby improving the consistency, stability, and accuracy of the test results.
[0060] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A testing system for the diaphragm of an electrolyzer for hydrogen production, characterized in that, At least including: First electrolytic cell; The second electrolytic cell is disposed on one side of the first electrolytic cell, and electrolyte is disposed in both the first and second electrolytic cells; Connecting pipelines to link the first electrolytic cell and the second electrolytic cell; A diaphragm is disposed in the connecting pipeline; Multiple electrodes, one end of which extends into the first electrolytic cell or the second electrolytic cell, and the other end of which extends out of the first electrolytic cell or the second electrolytic cell, with at least one of the electrodes disposed in the first electrolytic cell and the second electrolytic cell respectively; The liquid inlet device is connected to the interior of the first electrolytic cell and the second electrolytic cell; as well as An electrochemical workstation is electrically connected to the electrode.
2. The testing system according to claim 1, characterized in that, The plurality of electrodes includes a first working electrode, a second working electrode, and a reference electrode. The first working electrode is disposed in the first electrolytic cell, and the second working electrode and the reference electrode are each disposed in the second electrolytic cell.
3. The testing system according to claim 2, characterized in that, The first electrolytic cell includes a first shell and a first cover plate. One end of the first shell is open and the first shell is detachably placed in the opening direction of the first shell. The second electrolytic cell includes a second shell and a second cover plate. One end of the second shell is open and the second shell is detachably placed in the opening direction of the second shell.
4. The testing system according to claim 3, characterized in that, The first electrolytic cell further includes a first hole that penetrates the first cover plate, and the shape and size of the first hole are the same as the shape and size of the clamping part of the first working electrode.
5. The testing system according to claim 4, characterized in that, The second electrolytic cell further includes a second hole and a third hole, each of which penetrates the second cover plate. The shape and size of the second hole are the same as the shape and size of the clamping section of the second working electrode, and the shape and size of the third hole are the same as the shape and size of the clamping section of the reference electrode.
6. The testing system according to claim 5, characterized in that, The testing system also includes multiple limiting components, which are sleeved on the first working electrode outside the first electrolytic cell, the second working electrode outside the second electrolytic cell, and the reference electrode outside the second electrolytic cell, and the limiting components are positioned close to the first cover plate or the second cover plate.
7. The testing system according to claim 6, characterized in that, The limiting member includes a first limiting member, a second limiting member, and a third limiting member. The first limiting member is sleeved on the clamping part of the first working electrode located outside the first electrolytic cell, adjacent to the first hole. The second limiting member is sleeved on the clamping part of the second working electrode located outside the second electrolytic cell, adjacent to the second hole. The third limiting member is sleeved on the clamping part of the reference electrode located outside the second electrolytic cell, adjacent to the third hole.
8. The testing system according to claim 1, characterized in that, The liquid inlet device includes a first liquid inlet pipe and a second liquid inlet pipe. The outlet of the first liquid inlet pipe is connected to the interior of the first electrolytic cell, and the outlet of the second liquid inlet pipe is connected to the interior of the second electrolytic cell.
9. The testing system according to claim 8, characterized in that, The liquid inlet device further includes a first container and a second container. The first container is located at the end of the first liquid inlet pipe that is away from the first electrolytic cell, and the second container is located at the end of the second liquid inlet pipe that is away from the second electrolytic cell.
10. The testing system according to claim 8, characterized in that, The liquid inlet device also includes a transfer pump, which is installed on the first liquid inlet pipeline and the second liquid inlet pipeline.