Electro-catalytic performance testing system for magnetic field regulation and control

Abstract

The invention relates to the technical field of electro-catalysis, and provides an electro-catalysis performance test system for magnetic field regulation and control, the electro-catalysis performance test system comprises an electromagnet system and an electrochemical system, the electromagnet system comprises a first magnetic pole block and a second magnetic pole block which are arranged at an interval, and the first magnetic pole block and the second magnetic pole block are opposite in polarity; a regulation magnetic field is formed between the first magnetic pole block and the second magnetic pole block; the electrochemical system comprises a main reaction tank, a side reaction tank, an ion exchange membrane and an electric field loading system which are arranged in a regulation and control magnetic field, the main reaction tank and the side reaction tank are arranged in the regulation and control magnetic field in parallel, and the direction of the ion exchange membrane is perpendicular to that of the regulation and control magnetic field. The main reaction tank and the side reaction tank are arranged in the regulation magnetic field in parallel, and the ion exchange membrane is perpendicular to the magnetic field direction of the regulation magnetic field, so that the ion transfer direction between the two reaction chambers of the main reaction tank and the side reaction tank is parallel to the magnetic field direction, and the influence of Lorentz force on ion movement is avoided; and the test result accuracy of the electro-catalytic performance test system is improved.

Description

Technical Field

[0001] The invention relates to the technical field of electrocatalysis, and in particular to an electrocatalysis performance testing system for magnetic field regulation. Background Art

[0002] Environmental pollution and energy crisis caused by the burning of fossil fuels have prompted widespread attention to renewable energy. Greenhouse gases (such as CO2) continue to accumulate in the atmosphere, leading to climate change, and there is an urgent need to find green methods to convert CO2 into high-value chemicals. In recent years, electrochemical CO2 reduction reactions have shown great advantages and room for development, which can promote the recycling of carbon while alleviating the greenhouse effect. In the actual electrocatalytic energy conversion process, factors such as the microstructure and macroscopic physical properties of the catalyst are key to affecting the actual reaction rate and energy efficiency. Therefore, designing and optimizing catalytic performance is a necessary condition for achieving high-performance energy conversion.

[0003] In recent years, in addition to designing the intrinsic structure of catalyst materials, strategies to improve catalytic performance by applying physical external fields (temperature, stress, magnetic field, electric field, etc.) to optimize the structure and physical properties of electrocatalysts have gradually attracted attention. In particular, under the action of multi-field coupling, the active structure of the catalyst and the intermediates of the catalytic reaction are regulated and show different catalytic reaction behaviors. Therefore, it is of great scientific significance to study the evolution law of electrocatalytic reactions under external fields. At the same time, external field-assisted catalytic reactions are expected to become an effective way to alleviate the energy crisis and promote carbon cycles. Among different forms of external fields, magnetic field regulation shows efficient catalytic performance enhancement benefits and is considered to be one of the most effective means. Its non-contact effect facilitates the control and application of magnetic field intensity. The role of the magnetic field is mainly to optimize the role of active sites and intermediates by regulating the electronic structure and magnetic structure (spin state) of magnetic materials, thereby achieving the regulation of catalytic performance.

[0004] However, the magnetic field-related research that has been developed so far is mainly focused on the oxygen evolution reaction. Moreover, due to the complexity of the catalyst structure and the catalytic reaction on its surface, there is still controversy over the understanding of the mechanism of the magnetic field on the catalytic reaction, and the evolution law of the catalytic performance (activity, stability, product selectivity, etc.) under the magnetic field is still unclear. In addition, there is still a lack of research on more reaction types, especially the CO2 reduction reaction. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems existing in the related art. To this end, the present application proposes an electrocatalytic performance testing system for magnetic field regulation to study the evolution of catalytic activity, stability and product selectivity under external magnetic field regulation, and promote the development of efficient catalytic energy conversion.

[0006] The electrocatalytic performance testing system for magnetic field regulation proposed in the embodiment of the present application includes: An electromagnet system, comprising an electromagnet assembly, comprising a first magnetic pole block and a second magnetic pole block arranged at intervals, wherein the first magnetic pole block and the second magnetic pole block have opposite polarities, and a control magnetic field is formed between the first magnetic pole block and the second magnetic pole block, and the control magnetic field is a uniform magnetic field; The electrochemical system comprises an electrochemical reaction cell, which is arranged in the regulating magnetic field. The electrochemical reaction cell comprises a main reaction cell, a side reaction cell and an ion exchange membrane. The main reaction cell and the side reaction cell are placed in parallel in the regulating magnetic field. An ion exchange membrane is arranged between the main reaction cell and the side reaction cell. The ion exchange membrane is perpendicular to the direction of the regulating magnetic field. The main reaction cell and the side reaction cell exchange ions through the ion exchange membrane.

[0007] According to the electrocatalytic performance testing system for magnetic field regulation in the embodiment of the present application, by placing the main reaction pool and the side reaction pool in parallel in the regulating magnetic field and the ion exchange membrane and the direction of the regulating magnetic field are perpendicular, it is ensured that the ion transfer direction between the two reaction chambers of the main reaction pool and the side reaction pool is parallel to the direction of the magnetic field, thereby avoiding the influence of the Lorentz force on the movement of ions, improving the accuracy of the test results of the electrocatalytic performance testing system for magnetic field regulation, and facilitating the understanding of the mechanism of action of the magnetic field on the catalytic reaction and improving the understanding of the evolution law of the catalytic performance (activity, stability, product selectivity, etc.) under the magnetic field.

[0008] According to one embodiment of the present application, the main reaction cell comprises a working electrode, a reference electrode, a reaction cell top cover and a first body, the working electrode and the reference electrode are connected to the reaction cell top cover, and the reaction cell top cover is connected to the first body; The side reaction cell comprises a counter electrode and a second body, the counter electrode is connected to the second body, and the working electrode, the reference electrode and the counter electrode form a three-electrode system.

[0009] According to one embodiment of the present application, the first body is provided with a first air inlet, a first air outlet, a first liquid inlet and a first liquid outlet, and the first air inlet, the first air outlet, the first liquid inlet and the first liquid outlet are all connected to the reaction chamber inside the first body, and the second body is provided with a second air inlet, a second air outlet, a second liquid inlet and a second liquid outlet, and the second air inlet, the second air outlet, the second liquid inlet and the second liquid outlet are all connected to the reaction chamber inside the second body.

[0010] According to one embodiment of the present application, the distance between the first magnetic pole block and the second magnetic pole block is adjustable.

[0011] According to one embodiment of the present application, an electrocatalytic performance testing system for magnetic field regulation includes a device body, the device body includes a mounting seat, a first coil, a second coil and an adjusting screw, the first coil, the second coil and the adjusting screw are arranged on the mounting seat, the second coil and the first coil are arranged at intervals, the first magnetic pole block is installed on the first coil, the second magnetic pole block is installed on the second coil, and the adjusting screw is suitable for driving the second magnetic pole block to approach or move away from the first magnetic pole block.

[0012] According to one embodiment of the present application, the electromagnet system includes a cooling component, which is arranged on the electromagnet component and is used to cool the first coil and the second coil.

[0013] and / or,

[0014] The electromagnet system includes a current control component, which is connected to the electromagnet component and is used to control the magnitude of the current flowing to the first coil and the second coil, thereby changing the magnitude of the magnetic field between the first magnetic pole block and the second magnetic pole block.

[0015] and / or,

[0016] The electromagnet system comprises a magnetic field strength detection component, a detector of which is placed in the regulating magnetic field and is used to detect the magnetic field strength of the regulating magnetic field.

[0017] According to one embodiment of the present application, an electrocatalytic performance testing system for magnetic field regulation includes a product analysis system, which is connected to the electrochemical reaction cell and is used for online quantitative detection of reaction target products and by-products under magnetic fields of different intensities.

[0018] According to one embodiment of the present application, the main reaction tank is provided with a first ion exchange window, the secondary reaction tank is correspondingly provided with a second ion exchange window, and the ion exchange membrane is provided between the first ion exchange window and the second ion exchange window.

[0019] According to one embodiment of the present application, the electrochemical system includes a first rubber ring and a second rubber ring, the first rubber ring is arranged at the edge of the first ion exchange window, and the second rubber ring is arranged at the edge of the second ion exchange window. When the electrochemical reaction cell is assembled, the first rubber ring, the ion exchange membrane and the second rubber ring are connected in sequence.

[0020] According to one embodiment of the present application, the main reaction tank is provided with a plurality of first mounting holes, and the auxiliary reaction tank is correspondingly provided with second mounting holes, and the first mounting holes and the second mounting holes are suitable for being connected by non-magnetic fasteners.

[0021] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of an electrocatalytic performance testing system for magnetic field regulation provided in an embodiment of the present application.

[0024] Figure 2 It is a schematic diagram of the assembly structure of the electrochemical reaction cell provided in the embodiment of the present application.

[0025] Figure 3 This is one of the structural schematic diagrams of the electrochemical reaction cell provided in the embodiments of the present application.

[0026] Figure 4 This is the second structural schematic diagram of the electrochemical reaction cell provided in the embodiment of the present application.

[0027] Figure 5 It is a schematic diagram of the logical structure of the electrocatalytic performance testing system for magnetic field regulation provided in an embodiment of the present application.

[0028] Figure 6 It is a schematic diagram showing magnetic field intensity data collected by a specific embodiment of the electrocatalytic performance testing system for magnetic field regulation provided in the present application.

[0029] Figure 7 It is a schematic diagram showing current density data under different magnetic field controls obtained by collecting a specific embodiment of the electrocatalytic performance testing system for magnetic field control provided by the present application.

[0030] Figure 8 It is a schematic diagram showing product analysis result data under different magnetic field controls obtained by collecting data from a specific embodiment of the electrocatalytic performance testing system for magnetic field control provided in the present application.

[0031] Reference numerals: 100, electromagnet assembly; 101, regulating magnetic field; 110, first magnetic pole block; 120, second magnetic pole block; 200, electrochemical reaction cell; 210, main reaction cell; 211, first main body; 212, working electrode; 213, reference electrode; 214, first air inlet; 215, first air outlet; 216, first ion exchange window; 217, first mounting hole; 218, first liquid inlet; 219, first liquid outlet; 220, secondary reaction cell; 221, second main body; 222, counter electrode; 223, second air inlet; 224, second air outlet; 225, second ion exchange window; 226, second mounting hole; 227, second liquid inlet; 228, second liquid outlet; 230, ion exchange membrane; 240, first rubber ring; 250, second rubber ring; 260, reaction cell top cover; 300, device body; 310, mounting seat; 320, first coil; 330, second coil; 340, adjusting screw rod. DETAILED DESCRIPTION

[0032] The following is a further detailed description of the implementation of the present application in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.

[0033] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0034] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, wherein the fixed connection can include an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0035] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0037] It should be noted that the magnetic field-related research that has been developed is mainly oxygen evolution reaction, and due to the complexity of the catalyst structure and the catalytic reaction on its surface interface, the understanding of the mechanism of the magnetic field on the catalytic reaction is still controversial, and the evolution law of the catalytic performance (activity, stability, product selectivity, etc.) under the magnetic field is still unclear. In addition, there is still a lack of research on more reaction types, especially CO2 reduction reaction. There are two main reasons for this: on the one hand, limited by the structure of the CO2 reduction reaction electrolytic cell (H-type electrolytic cell), the ion exchange between the two chambers in the traditional electrolytic cell may be affected by the Lorentz force under the magnetic field; on the other hand, it is necessary to build a complex system of magnetic field coupling and online product analysis. Therefore, it is urgent to develop an electrocatalytic test system for magnetic field regulation, which integrates electrochemical performance, online product analysis, and in-situ magnetic field control; at the same time, optimize the electrolytic cell structure to achieve compatibility between single cell and H-type electrolytic cell to solve the above technical problems, thereby promoting the research on magnetic field regulation of catalytic reactions.

[0038] The purpose of the present invention is to develop a test system for studying electrocatalytic performance under precise control of a magnetic field, to study the evolution of catalytic activity, stability and product selectivity under external magnetic field control, and to promote the development of efficient catalytic energy conversion.

[0039] Combine the following Figures 1 to 8The present invention describes an electrocatalytic performance testing system for magnetic field regulation.

[0040] According to the electrocatalytic performance testing system for magnetic field regulation proposed in the embodiment of the present application, please refer to Figures 1 to 5 , including an electromagnet system and an electrochemical system, the electromagnet system includes an electromagnet assembly 100, including a first magnetic pole block 110 and a second magnetic pole block 120 arranged at an interval, the first magnetic pole block 110 and the second magnetic pole block 120 have opposite polarities, and a control magnetic field 101 is formed between the first magnetic pole block 110 and the second magnetic pole block 120, and the control magnetic field 101 is a uniform magnetic field; the electrochemical system includes an electrochemical reaction cell 200, which is arranged in the control magnetic field 101, the electrochemical reaction cell 200 includes a main reaction cell 210, a secondary reaction cell 220 and an ion exchange membrane 230, the main reaction cell 210 and the secondary reaction cell 220 are arranged in parallel in the control magnetic field 101, an ion exchange membrane 230 is arranged between the main reaction cell 210 and the secondary reaction cell 220, the ion exchange membrane 230 is perpendicular to the magnetic field direction of the control magnetic field 101, and the main reaction cell 210 and the secondary reaction cell 220 exchange ions through the ion exchange membrane 230.

[0041] According to the electrocatalytic performance testing system for magnetic field regulation of the embodiment of the present application, by placing the main reaction pool 210 and the auxiliary reaction pool 220 in parallel in the regulating magnetic field 101 and the magnetic field direction of the ion exchange membrane 230 and the regulating magnetic field 101 being perpendicular, it is ensured that the ion transfer direction between the two reaction chambers of the main reaction pool 210 and the auxiliary reaction pool 220 is parallel to the magnetic field direction, thereby avoiding the influence of the Lorentz force on the ion movement, improving the accuracy of the test results of the electrocatalytic performance testing system for magnetic field regulation, and facilitating the understanding of the mechanism of action of the magnetic field on the catalytic reaction and improving the understanding of the evolution law of the catalytic performance (activity, stability, product selectivity, etc.) under the magnetic field.

[0042] It is understandable that in the electromagnet system, the electromagnet assembly 100 is composed of a first pole block 110 and a second pole block 120 which are spaced apart, and a magnetic field is generated by current excitation. The first pole block 110 and the second pole block 120 are pole blocks with opposite polarities, wherein the first pole block 110 can be an electromagnet, or a composite magnetic block of an electromagnet and a permanent magnet, and no specific limitation is made here. Similarly, the second pole block 120 can be an electromagnet, or a composite magnetic block of an electromagnet and a permanent magnet. The control magnetic field 101 formed between the first pole block 110 and the second pole block 120 has a magnetic field strength that remains constant in space, which can reduce the influence of magnetic field inhomogeneity on the experimental results and improve the accuracy of the experiment.

[0043] It is understandable that in the electrochemical system, the electrochemical reaction cell 200 is a device comprising a main reaction cell 210, a side reaction cell 220 and an ion exchange membrane 230, for performing an electrochemical reaction. The main reaction cell 210 and the side reaction cell 220 are placed in parallel in the control magnetic field 101, and the main reaction cell 210 is used to perform the main electrochemical reaction and the side reaction cell 220 is used to perform an electrochemical auxiliary reaction. The ion exchange membrane 230 is arranged between the main reaction cell 210 and the side reaction cell 220, allowing ions to exchange between the two reaction chambers. The ion exchange membrane 230 can maintain the independence of the two reaction chambers while allowing necessary ion exchange to ensure the reaction. The main reaction cell 210 and the side reaction cell 220 are arranged in parallel to ensure that the ion transfer direction between the two reaction chambers is parallel to the magnetic field direction, reducing the influence of the Lorentz force.

[0044] The electrocatalytic performance test system for magnetic field regulation proposed in the embodiment of the present application realizes accurate testing of electrocatalytic performance under magnetic field through a carefully designed electromagnet system and electrochemical system, providing a powerful tool for research in related fields. By optimizing the electrolytic cell structure and magnetic field setting, the influence of magnetic field on ion movement is reduced, and the accuracy of test results is improved. Accurate test results help to deeply understand the mechanism of action of magnetic field on catalytic reaction and provide strong support for research in related fields.

[0045] According to one embodiment of the present application, the main reaction cell 210 includes a working electrode 212, a reference electrode 213, a reaction cell top cover 260 and a first body 211, the working electrode 212 and the reference electrode 213 are connected to the reaction cell top cover 260, and the reaction cell top cover 260 is connected to the first body 211; the secondary reaction cell 220 includes a counter electrode 222 and a second body 221, the counter electrode 222 is connected to the second body 221, and the working electrode 212, the reference electrode 213 and the counter electrode 222 form a three-electrode system.

[0046] It is understandable that the working electrode 212 of the main reaction cell 210 is the electrode where the main reaction occurs in the electrochemical reaction, which can directly reflect the electrocatalytic performance of the catalyst under the magnetic field. The reference electrode 213 of the main reaction cell 210 is used to provide a stable potential reference, which can eliminate the error in the potential measurement and improve the reliability of the experimental data. The counter electrode 222 of the secondary reaction cell 220 is an electrode that forms a current loop with the working electrode 212 in the electrochemical reaction, and can be used to receive or provide electrons.

[0047] It is understandable that the electrochemical test system consisting of a three-electrode system consisting of a working electrode 212, a reference electrode 213, and a counter electrode 222 can accurately measure the potential and current of the working electrode 212, thereby providing detailed electrochemical performance data. By adopting a three-electrode system, the potential and current of the working electrode 212 can be accurately measured, thereby more accurately evaluating the electrochemical performance of the catalyst. Accurate and reliable electrochemical performance data helps to deeply understand the mechanism of action of the magnetic field on the catalytic reaction and provide strong support for research in related fields.

[0048] It can be understood that the reaction cell top cover 260 is detachably connected to the first body 211, and the reaction cell top cover 260 integrates the working electrode 212 and the reference electrode 213. The user can easily replace the sample in the reaction cell inside the first body 211, and can easily replace the working electrode 212 and the reference electrode 213 arranged on the reaction cell top cover 260. In this way, the electrocatalytic performance testing system for magnetic field regulation of the present application will not affect the ion exchange membrane 230 when replacing the sample. Similarly, replacing the ion exchange membrane 230 will not affect the sample and the working electrode 212 and the reference electrode 213 on the main reaction cell 210, which greatly improves the convenience of use.

[0049] According to one embodiment of the present application, the main reaction cell 210 is a cathode reaction cell, and the auxiliary reaction cell 220 is an anode reaction cell.

[0050] In the electrochemical process, the electrode that receives electrons and undergoes a reduction reaction is called a cathode, and the reaction occurring on the electrode is called a cathode reaction. The main reaction cell 210 is a cathode reaction cell, which is mainly used to study the performance of the catalyst in the reduction reaction. The secondary reaction cell 220 is an anode reaction cell, which is mainly used to study the performance of the catalyst in the oxidation reaction.

[0051] According to one embodiment of the present application, the first body 211 is provided with a first air inlet 214 and a first air outlet 215, a first liquid inlet 218 and a first liquid outlet 219, and the first air inlet 214, the first air outlet 215, the first liquid inlet 218 and the first liquid outlet 219 are all connected to the reaction chamber inside the first body 211, and the second body 221 is provided with a second air inlet 223, a second air outlet 224, a second liquid inlet 227 and a second liquid outlet 228, and the second air inlet 223, the second air outlet 224, the second liquid inlet 227 and the second liquid outlet 228 are all connected to the reaction chamber inside the first body 211.

[0052] It can be understood that the first body 211 has a first air inlet 214 and a first air outlet 215, and gas can enter the reaction chamber of the first body 211 through the first air inlet 214. The first body 211 has a first liquid inlet 218 and a second liquid outlet 219, and liquid can enter the reaction chamber of the first body 211 through the first liquid inlet 218. After completing a certain reaction or treatment, gas products and gas by-products can be discharged through the first air outlet, and liquid products and liquid by-products can flow out through the second liquid outlet 219 for easy collection.

[0053] The second body 221 has a second air inlet 223 and a second air outlet 224, through which gas can enter the reaction chamber of the second body 221; the second body 221 has a second liquid inlet 227 and a second liquid outlet 228, through which liquid can enter the reaction chamber of the second body 221; after a certain reaction or treatment is completed, gas products and gas by-products can be discharged through the second air outlet 224, and liquid products and liquid by-products can be discharged through the second liquid outlet 228, for easy collection.

[0054] According to one embodiment of the present application, the distance between the first magnetic pole block 110 and the second magnetic pole block 120 is adjustable.

[0055] It is understandable that the relative position between the first magnetic pole block 110 and the second magnetic pole block 120 can be changed by means such as a slide rail, a threaded adjuster, etc., so as to adjust the strength of the magnetic field formed between them. The design of adjustable distance allows the experimenter to flexibly set different magnetic field conditions according to specific research needs.

[0056] According to one embodiment of the present application, an electrocatalytic performance testing system for magnetic field regulation includes a device body 300, the device body 300 includes a mounting base 310, a first coil 320, a second coil 330 and an adjusting screw 340, the first coil 320, the second coil 330 and the adjusting screw 340 are arranged on the mounting base 310, the second coil 330 and the first coil 320 are arranged at intervals, the first magnetic pole block 110 is installed on the first coil 320, the second magnetic pole block 120 is installed on the second coil 330, and the adjusting screw 340 is suitable for driving the second magnetic pole block 330 to approach or move away from the first magnetic pole block 320.

[0057] It can be understood that the mounting base 310 is the supporting structure of the whole system, the first coil 320 and the second coil 330 are arranged at intervals, and are used to install the first pole block 110 and the second pole block 120 respectively. The mounting base 310, the first coil 320 and the second coil 330 together constitute a stable supporting structure, ensuring the stability and position accuracy of the pole blocks during the adjustment process. The relative position between them can be adjusted by adjusting the screw rod 340, and the adjusting screw rod 340 can accurately control the movement of the second pole block 120 relative to the first pole block 110 by rotating. This movement can be close or away, thereby adjusting the distance between the two pole blocks.

[0058] According to an embodiment of the present application, the electromagnet system includes a cooling assembly (not marked in the figure), which is disposed in the electromagnet assembly 100 and is used to cool the first coil 320 and the second coil 330 .

[0059] It is understandable that the cooling component is provided on the electromagnet component 100 to cool the first coil 320 and the second coil 330. Since the electromagnet generates a large amount of heat when working, the temperature change of the electromagnet may affect the strength and uniformity of the magnetic field, thereby affecting the accuracy of the experimental results. By timely dissipating heat through the cooling component, the temperature of the electromagnet component 100 can be effectively reduced, performance degradation or damage caused by overheating can be prevented, and the accuracy and reliability of the entire test system can be improved.

[0060] According to one embodiment of the present application, the electromagnet system includes a current control component (not marked in the figure), which is connected to the electromagnet component 100 and is used to control the current flowing to the first coil 320 and the second coil 330, thereby changing the magnetic field between the first pole block 110 and the second pole block 120.

[0061] It is understandable that the current control component is used to accurately control the magnitude of the current flowing to the first coil 320 and the second coil 330. By adjusting the magnitude of the current, the magnitude of the magnetic force generated by the magnetic pole block can be changed, thereby achieving accurate control of the magnetic field.

[0062] It should be noted that the magnitudes of the currents flowing to the first coil 320 and the second coil 330 may be the same or different, and no specific limitation is made here.

[0063] According to one embodiment of the present application, the electromagnet system includes a magnetic field strength detection component (not marked in the figure), the detector of the magnetic field strength detection component is placed in the control magnetic field 101, and the magnetic field strength detection component is used to detect the magnetic field strength of the control magnetic field 101.

[0064] It can be understood that the magnetic field strength detection component is used to monitor and record the magnetic field strength of the regulated magnetic field 101 in real time, realizing real-time monitoring and precise control of the strength of the regulated magnetic field 101, and providing more stable, accurate and reliable experimental conditions for the magnetic field regulated electrocatalytic performance test system.

[0065] According to one embodiment of the present application, an electrocatalytic performance testing system for magnetic field regulation includes a product analysis system (not marked in the figure), which is connected to the electrochemical reaction cell 200 and is used for online quantitative detection of reaction target products and by-products under magnetic fields of different intensities.

[0066] It is understandable that, since the product analysis system is connected to the electrochemical reaction cell 200 and can be detected under magnetic fields of different strengths, the relationship between the magnetic field strength and the reaction products can be conveniently analyzed. The online detection function of the product analysis system can significantly reduce the experimental time and improve the experimental efficiency. At the same time, since the detection process is automated and highly accurate, the accuracy of the experimental results can be ensured.

[0067] According to one embodiment of the present application, the main reaction tank 210 is provided with a first ion exchange window 216 , the secondary reaction tank 220 is correspondingly provided with a second ion exchange window 225 , and the ion exchange membrane 230 is provided between the first ion exchange window 216 and the second ion exchange window 225 .

[0068] It can be understood that the first ion exchange window 216 is arranged on one side of the main reaction tank 210 for the entry, exit and exchange of ions. The second ion exchange window 225 corresponds to the first ion exchange window 216 and is arranged on one side of the secondary reaction tank 220. The ion exchange membrane 230 is placed between the first ion exchange window 216 and the second ion exchange window 225 to play a role in selectively transmitting ions.

[0069] According to one embodiment of the present application, the electrochemical system includes a first rubber ring 240 and a second rubber ring 250. The first rubber ring 240 is arranged at the edge of the first ion exchange window 216, and the second rubber ring 250 is arranged at the edge of the second ion exchange window 225. When the electrochemical reaction cell 200 is assembled, the first rubber ring 240, the ion exchange membrane 230 and the second rubber ring 250 are connected in sequence.

[0070] It is understandable that the design of the first rubber ring 240 and the second rubber ring 250 ensures the sealing of the first ion exchange window 216 and the second ion exchange window 225, and also plays a role in fixing the ion exchange membrane 230. By fitting closely to the edges of the ion exchange windows, the rubber rings can effectively prevent the ion exchange membrane 230 from moving or deforming during the reaction process.

[0071] According to one embodiment of the present application, the main reaction tank 210 is provided with a plurality of first mounting holes 217, and the secondary reaction tank 220 is correspondingly provided with second mounting holes 226, and the first mounting holes 217 and the second mounting holes 226 are suitable for being connected by non-magnetic fasteners.

[0072] It is understood that the non-magnetic fastener is a fastener that does not produce a magnetic response, and is used to connect the main reaction cell 210 and the auxiliary reaction cell 220 to avoid interference with the electrocatalytic performance regulated by the magnetic field. The design of the first mounting hole 217 and the second mounting hole 226 and the connection of the non-magnetic fastener ensure a stable connection between the main reaction cell 210 and the auxiliary reaction cell 220, and avoid magnetic field interference. Not only does it improve the stability and reliability of the electrochemical system, it also simplifies the assembly process and enhances durability.

[0073] The non-magnetic fasteners may be non-magnetic screws, non-magnetic bolts, non-magnetic studs and other fasteners.

[0074] In one embodiment, the electrocatalytic performance test system for magnetic field regulation includes a computer, an electrochemical system, an electrochemical reaction cell 200, an electromagnet system and a product analysis system. The computer is used to control the electrochemical system, the electromagnet system and the product analysis system, including corresponding parameter settings and start-stop control, and uniformly coordinate the electrocatalytic reaction, the electromagnetic field strength and the product analysis state; the electrochemical system is controlled by the computer and drives the electrocatalytic reaction through a three-electrode system; the specially designed reaction cell is placed in a magnetic field to provide an electrocatalytic reaction environment, and the reaction cell is designed with two chambers, and the ion transfer direction between the two chambers is parallel to the magnetic field direction, thereby avoiding the influence of the Lorentz force on the ion movement; the electromagnet system includes an electromagnet, a current control module, a magnetic field strength monitoring module and a water cooling module. Among them, the electromagnet is composed of two magnetic poles, the magnetic pole face is a plane, and the distance between the two magnetic pole faces is adjustable. When the distance between the magnetic pole faces is determined, the magnetic field strength (uniform magnetic field) between the pole faces is controlled by the current control module. The magnetic field strength monitoring module is used to measure the magnetic field strength between the two magnetic pole faces to ensure the precise control of the magnetic field strength. The water cooling module is used to cool the electromagnet to ensure its stable and long-term operation. The product analysis system is directly connected to the reaction pool and is used for online quantitative detection of the target reaction product and by-product under different magnetic field strengths. The present invention takes gas chromatography (for gas product analysis) as an example, but is not limited to this equipment, and also includes various gas phase and liquid phase product analysis equipment.

[0075] The design logic of the electrocatalytic performance testing system for magnetic field regulation according to the present invention is as follows: Figure 5 As shown. In order to accurately control the magnetic field intensity and simultaneously obtain electrocatalytic activity, stability, and product analysis information, a computer is used to control the electrochemical system, electromagnet system, and product analysis system. The electrochemical system controls the voltage and current state in the reaction cell.

[0076] The electromagnet system applies a uniform magnetic field to the catalyst in the reaction tank and is controlled by a computer. Figures 1 to 4 As shown, the electrocatalytic reaction cell is placed in the magnetic field and placed parallel to the middle of the two magnetic poles. The magnetic field strength is adjusted by the current control module, and the magnetic field strength monitoring module is used to feedback the current magnetic field strength to achieve precise magnetic field control. The temperature of the electromagnet is controlled by the water cooling module to ensure long-term operation under a 1T magnetic field strength.

[0077] The design of the catalytic reaction pool is as follows: Figures 1 to 4 As shown, the main body is divided into a main reaction tank 210 and a sub-reaction tank 220. Taking the CO2 reduction reaction as an example, the main reaction tank 210 is a cathode reaction, which includes a working electrode 212 and a reference electrode 213, and also includes a gas inlet and outlet for the introduction of reaction gas and the discharge of product gas. The sub-reaction tank 220 is an anode reaction, which includes a counter electrode 222, and a gas inlet and outlet. The use of the gas interface is optional and can be closed with a plug. An ion exchange membrane 230 is installed between the main reaction tank 210 and the sub-reaction tank 220, and is sealed with a rubber ring. All interfaces are fixed by non-magnetic screws to avoid interference with the magnetic field distribution. The special design of this reaction tank is that the main reaction tank 210 and the sub-reaction tank 220 are placed in parallel in the magnetic field, such as Figure 2 As shown in FIG. 1 , the large-sized ion exchange membrane 230 window between the main reaction tank 210 and the auxiliary reaction tank 220 and the design that the ion movement direction is parallel to the magnetic field direction ensure that the movement of ions in the magnetic field is not disturbed.

[0078] The product analysis system is controlled by a computer, and its sample inlet is connected to the reaction cell gas outlet for real-time analysis of the catalytic reaction products.

[0079] The collected magnetic field intensity data, electrochemical performance test data under magnetic field regulation and product analysis data are as follows: Figures 6 to 8 shown.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electrocatalytic performance testing system for magnetic field regulation, characterized in that: include: An electromagnet system comprises an electromagnet assembly (100), comprising a first magnetic pole block (110) and a second magnetic pole block (120) arranged at an interval, wherein the first magnetic pole block (110) and the second magnetic pole block (120) have opposite polarities, and a control magnetic field (101) is formed between the first magnetic pole block (110) and the second magnetic pole block (120), wherein the control magnetic field (101) is a uniform magnetic field; An electrochemical system comprises an electrochemical reaction cell (200) arranged in the control magnetic field (101), wherein the electrochemical reaction cell (200) comprises a main reaction cell (210), a side reaction cell (220) and an ion exchange membrane (230), wherein the main reaction cell (210) and the side reaction cell (220) are arranged in parallel in the control magnetic field (101), an ion exchange membrane (230) is arranged between the main reaction cell (210) and the side reaction cell (220), the magnetic field directions of the ion exchange membrane (230) and the control magnetic field (101) are perpendicular, and the main reaction cell (210) and the side reaction cell (220) exchange ions through the ion exchange membrane (230).

2. The electrocatalytic performance testing system for magnetic field regulation according to claim 1, characterized in that: The main reaction cell (210) comprises a working electrode (212), a reference electrode (213), a reaction cell top cover (260) and a first body (211); the working electrode (212) and the reference electrode (213) are connected to the reaction cell top cover (260), and the reaction cell top cover (260) is connected to the first body (211); The side reaction cell (220) comprises a counter electrode (222) and a second body (221), the counter electrode (222) is connected to the second body (221), and the working electrode (212), the reference electrode (213) and the counter electrode (222) form a three-electrode system.

3. The electrocatalytic performance testing system for magnetic field regulation according to claim 2, characterized in that: The first body (211) is provided with a first air inlet (214), a first air outlet (215), a first liquid inlet (218) and a first liquid outlet (219); the first air inlet (214), the first air outlet (215), the first liquid inlet (218) and the first liquid outlet (219) are all connected to the reaction chamber inside the first body (211); the second body (221) is provided with a second air inlet (223), a second air outlet (224), a second liquid inlet (227) and a second liquid outlet (228); the second air inlet (223), the second air outlet (224), the second liquid inlet (227) and the second liquid outlet (228) are all connected to the reaction chamber inside the second body (221).

4. The electrocatalytic performance testing system for magnetic field regulation according to claim 1, characterized in that: The distance between the first magnetic pole block (110) and the second magnetic pole block (120) is adjustable.

5. The electrocatalytic performance testing system for magnetic field regulation according to claim 4, characterized in that: The device comprises a device body (300), the device body (300) comprising a mounting seat (310), a first coil (320), a second coil (330) and an adjusting screw rod (340), the first coil (320), the second coil (330) and the adjusting screw rod (330) being arranged on the mounting seat (310), the second coil (330) and the first coil (320) being arranged at intervals, the first magnetic pole block (110) being installed in the first coil (320), the second magnetic pole block (120) being installed in the second coil (330), and the adjusting screw rod (330) being suitable for driving the second magnetic pole block (120) to approach or move away from the first magnetic pole block (110).

6. The electrocatalytic performance testing system for magnetic field regulation according to claim 1, characterized in that: The electromagnet system comprises a cooling component, which is arranged on the electromagnet component (100) and is used to cool the first coil (320) and the second coil (330). and / or, The electromagnet system comprises a current control component, the current control component being connected to the electromagnet component (100) and being used to control the magnitude of the current flowing to the first coil (320) and the second coil (330), thereby changing the magnitude of the magnetic field between the first magnetic pole block (110) and the second magnetic pole block (120). and / or, The electromagnet system comprises a magnetic field strength detection component, wherein a detector of the magnetic field strength detection component is placed in the regulating magnetic field (101) and is used to detect the magnetic field strength of the regulating magnetic field (101).

7. The electrocatalytic performance testing system for magnetic field regulation according to claim 1, characterized in that: It comprises a product analysis system, which is connected to the electrochemical reaction cell (200) and is used for online quantitative detection of reaction target products and by-products under magnetic fields of different intensities.

8. The electrocatalytic performance testing system for magnetic field regulation according to any one of claims 1 to 7, characterized in that: The main reaction pool (210) is provided with a first ion exchange window (216), the secondary reaction pool (220) is correspondingly provided with a second ion exchange window (225), and the ion exchange membrane (230) is provided between the first ion exchange window (216) and the second ion exchange window (225).

9. The electrocatalytic performance testing system for magnetic field regulation according to claim 8, characterized in that: The electrochemical system comprises a first rubber ring (240) and a second rubber ring (250), wherein the first rubber ring (240) is arranged at the edge of the first ion exchange window (216), and the second rubber ring (250) is arranged at the edge of the second ion exchange window (225), and when the electrochemical reaction cell (200) is assembled, the first rubber ring (240), the ion exchange membrane (230) and the second rubber ring (250) are connected in sequence.

10. The electrocatalytic performance testing system for magnetic field regulation according to any one of claims 1 to 7, characterized in that: The main reaction pool (210) is provided with a plurality of first mounting holes (217), and the auxiliary reaction pool (220) is correspondingly provided with second mounting holes (226), and the first mounting holes (217) and the second mounting holes (226) are suitable for being connected via non-magnetic fasteners.

Images