Reaction tank and system for magnetic field electrochemical in-situ infrared spectrum test

Abstract

The invention relates to the technical field of electrochemistry, and provides a reaction tank and system for a magnetic field electrochemical in-situ infrared spectrum test. The reaction tank for the magnetic field electrochemical in-situ infrared spectrum test comprises a reaction tank module, an attenuated total reflection crystal module, an electrode and gas-liquid circulation module and a magnet module, and the magnet module is configured to adjust the magnetic field intensity of a working electrode; the reaction tank main body is communicated with the opposite tank main body through an ion exchange membrane, and the main direction of ion migration on the ion exchange membrane is set to be parallel to the direction of a magnetic field applied by the magnet module. Through the magnetic field intensity adjustable magnet module, accurate and controllable application of a magnetic field on the surface of a catalyst is realized, the influence of magnetic field Lorentz force on a key ion transmission process can be eliminated under a double-cell structure, and optical path stability and magnetic field uniformity are optimized for in-situ infrared spectrum testing. Therefore, the research difficulty of electrocatalytic reaction in-situ infrared characterization in a magnetic field environment is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrochemistry, in particular to a reaction cell and system for magnetic field electrochemical in-situ infrared spectroscopy testing. BACKGROUND

[0002] With the global energy structure accelerating from fossil fuels to renewable energy, renewable power supply is increasingly abundant. Compared with catalytic processes driven by indirect heat production through electricity, electrocatalytic processes driven directly by electricity have increasingly prominent application potential in the fields of energy storage and conversion, chemical production and manufacturing, etc. due to their higher energy conversion efficiency and more suitable distributed production mode.

[0003] The core process of an electrocatalytic reaction mainly occurs at a heterogeneous interface composed of a solid catalyst surface and an electrolyte solution or a reaction gas. The interface structure is complex, accompanied by strong local electric field, concentration gradient and mass transfer effect, and there are dynamic structural reconstruction and intermediate evolution behaviors. Therefore, the development of in-situ characterization technology capable of real-time detection of the electrocatalytic interface under reaction conditions is of great significance for revealing the reaction mechanism, guiding the design of high-performance electrocatalysts and optimizing the operating conditions.

[0004] In recent years, external magnetic field regulation strategies have attracted widespread attention due to their ability to non-contact enhance electrocatalytic reaction activity, flexibility and low operating cost. Studies have shown that magnetic fields can affect reactant mass transfer, intermediate adsorption behavior and electronic structure through mechanisms such as Lorentz force, spin effect and magnetic heating effect, thereby regulating the catalytic reaction path and kinetics. This regulation method provides a new dimension for understanding the catalytic process and has important scientific research value.

[0005] However, existing in-situ infrared spectroscopy electrolysis testing systems cannot effectively integrate controllable magnetic fields without interfering with the optical path and electrochemical measurements, thereby restricting the depth of research in this field.

[0006] Therefore, researchers urgently need to actively introduce magnetic fields and accurately simulate real reaction environments to reveal the microscopic mechanism of the magnetic field enhancement effect. SUMMARY

[0007] The present application aims to at least solve one of the technical problems in the related art. To this end, the present application proposes a reaction cell for magnetic field electrochemical in-situ infrared spectroscopy testing, which aims to reduce the research difficulty of simulating real reaction environments, thereby facilitating users to study the properties and dynamic evolution rules of adsorbed species on the surface and interface of electrocatalysts under the regulation of an external magnetic field, and providing more comprehensive and rich in-situ information for in-depth understanding of the electrocatalytic reaction mechanism under the action of a magnetic field.

[0008] The present application also proposes an in-situ electrolysis testing system.

[0009] According to the reaction cell for magnetic field electrochemistry in-situ infrared spectrum test provided by the first aspect of the application, the reaction cell comprises: A reaction cell module comprises a reaction cell body, a counter cell body and an ion exchange membrane; An attenuated total reflection crystal module is connected to the reaction cell body, and the attenuated total reflection crystal module is used for fixing an attenuated total reflection crystal, and a surface of the fixed attenuated total reflection crystal is a working electrode; An electrode and gas / liquid circulation module is arranged above the reaction cell module, and is used for clamping a reference electrode, a counter electrode and a gas / liquid circulation pipeline; A magnet module is connected to the reaction cell body, and the magnet module is configured to adjust the magnetic field strength of the working electrode; The reaction cell module is configured to switch between a single cell structure and a double cell structure; when the double cell structure is adopted, the reaction cell body and the counter cell body are connected, the reaction cell body and the counter cell body are communicated through the ion exchange membrane, and the main direction of ion migration on the ion exchange membrane is set to be parallel to the direction of the magnetic field applied by the magnet module; when the single cell structure is adopted, the counter cell body is separated from the reaction cell body.

[0010] The reaction cell for magnetic field electrochemistry in-situ infrared spectrum test according to the application can precisely and controllably apply the magnetic field on the surface of the catalyst through the magnet module with adjustable magnetic field strength, can eliminate the influence of the magnetic field Lorentz force on the key ion transmission process in the double cell structure, ensures the uniformity of the magnetic field in the infrared spot area, ensures that the attenuated total reflection signal is not disturbed by the magnetic field, and thus provides an accurate environment for the infrared characterization of the electrocatalytic intermediate under the magnetic field regulation.

[0011] According to one embodiment of the application, when the single cell structure is adopted, the working electrode, the reference electrode and the counter electrode are arranged in the reaction cell body; and when the double cell structure is adopted, the reference electrode is arranged in the reaction cell body, and the counter electrode is fixed to the counter cell body.

[0012] According to one embodiment of the application, the electrode and gas / liquid circulation module comprises a reaction cell cover and a counter cell cover, the reaction cell cover is connected to the reaction cell body, the reaction cell cover is used for mounting the reference electrode, the counter electrode and part of the gas / liquid circulation pipeline when the single cell structure is adopted, and the reaction cell cover is used for mounting the reference electrode and part of the gas / liquid circulation pipeline when the double cell structure is adopted, and the counter cell cover is connected to the counter cell body, and the counter cell cover is used for mounting the counter electrode and part of the gas / liquid circulation pipeline.

[0013] According to one embodiment of this application, the magnet module includes a fixed base and a magnet, the fixed base being installed on the reaction tank body, and the magnet being detachably connected to the fixed base.

[0014] According to one embodiment of this application, the attenuating total reflection crystal module includes a fixing member, a flat fixing plate, and a silicone gasket; the fixing member is used to clamp and fix the attenuating total reflection crystal on the flat fixing plate, and the flat fixing plate has a groove on the side facing away from the reaction cell body to ensure that the infrared beam can be incident on the fixed attenuating total reflection crystal without obstruction.

[0015] According to one embodiment of this application, the reaction cell module, the attenuated total reflection crystal module, the electrode and gas-liquid circulation module, and the magnet module are all fastened with non-magnetic screws.

[0016] A system for in-situ magnetic field electrochemical infrared spectroscopy testing according to a second aspect of this application includes: An electrochemical circuit system includes an electrochemical workstation and the aforementioned reaction cell for in-situ magnetic field electrochemical infrared spectroscopy testing; the electrochemical workstation is used to apply electrochemical signals to the reaction cell for in-situ magnetic field electrochemical infrared spectroscopy testing and to acquire electrochemical data. The infrared optical path system includes a Fourier transform infrared spectrometer and an infrared optical path attenuation total reflection device. The Fourier transform infrared spectrometer is used to generate an infrared beam and detect the reflected light after attenuation total reflection. After passing through the infrared optical path attenuation total reflection device, the infrared beam is directed towards the attenuation total reflection crystal and reflected back to the infrared optical path attenuation total reflection device, and then directed towards the Fourier transform infrared spectrometer.

[0017] According to one embodiment of this application, the in-situ electrolysis testing system further includes a computer, which is used to control the operation of the Fourier transform infrared spectrometer and the electrochemical workstation, and to collect data generated by the Fourier transform infrared spectrometer and the electrochemical workstation.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced one by one below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1This is a schematic diagram of the structure of a system for in-situ magnetic field electrochemical infrared spectroscopy testing provided in one embodiment of this application.

[0021] Figure 2 This is a schematic diagram of the structure of a reaction cell for in-situ magnetic field electrochemical infrared spectroscopy testing in a dual-cell structure, provided in one embodiment of this application.

[0022] Figure 3 This is a schematic diagram of the structure of a reaction cell for in-situ magnetic field electrochemical infrared spectroscopy testing provided in one embodiment of this application when it is in a single-cell structure.

[0023] Figure 4 This application provides data on the variation of current density under different magnetic field conditions for one embodiment of the present application.

[0024] Figure 5 In-situ ATR-SEIRAS spectroscopic data of electrocatalytic intermediates under magnetic field regulation under different magnetic field conditions provided in one embodiment of this application. Detailed Implementation

[0025] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0026] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections, wherein a 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0028] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0030] The following is combined Figures 1-5 The present invention describes a reaction cell and system for in-situ magnetic field electrochemical infrared spectroscopy testing.

[0031] According to an embodiment of this application, a reaction cell for in-situ magnetic field electrochemical infrared spectroscopy testing is provided. Please refer to... Figures 1 to 3 The reaction cell for in-situ magnetic field electrochemical infrared spectroscopy testing includes: a reaction cell module comprising a main reaction cell, a counter cell, and an ion exchange membrane; an attenuating total reflectance crystal module connected to the main reaction cell, used to fix the attenuating total reflectance crystal, the surface of which serves as the working electrode; an electrode and gas / liquid circulation module covering the reaction cell module, used to clamp and fix the reference electrode, the counter electrode, and the gas / liquid circulation pipeline; and a magnet module connected to the main reaction cell, configured to have an adjustable magnetic field strength against the working electrode. The reaction cell module is configured to switch between a single-cell structure and a dual-cell structure. In the dual-cell structure, the main reaction cell and the counter cell are connected, and the main reaction cell and the counter cell are connected through the ion exchange membrane, with the main direction of ion migration on the ion exchange membrane set parallel to the direction of the magnetic field applied by the magnet module. In the single-cell structure, the counter cell is removed from the main reaction cell.

[0032] According to the embodiment of this application, the reaction cell for in-situ magnetic field electrochemical infrared spectroscopy testing achieves precise and controllable application of the magnetic field on the catalyst surface through an adjustable magnetic field strength magnet module. This eliminates the influence of the Lorentz force of the magnetic field on the key ion transport process in the dual-cell structure, ensures the uniformity of the magnetic field in the infrared spot region, and reduces the research difficulty of simulating the real reaction environment.

[0033] It should be noted that the reaction cell for in-situ magnetic field electrochemical infrared spectroscopy testing in this application is specifically designed for in-situ magnetic field electrochemical infrared spectroscopy testing. Through tunable magnetic field and structural switching, magnetic field inhomogeneity and Lorentz force interference in the infrared detection region are eliminated, thereby improving the signal-to-noise ratio of the infrared signal.

[0034] Understandably, in a single-cell structure, the connecting components between the counter cell and the working cell are removed, and gaskets and end plates are used to seal the connection points, thus forming a single-cell structure in which the working electrode, reference electrode, and counter electrode are all in the same cell.

[0035] In the dual-cell structure, an ion exchange membrane is installed between the working cell and the counter cell, and a rubber ring is used to ensure a seal. The connection direction of the ion exchange membrane between the two cells (i.e., the main direction of ion migration) is set to be parallel to the direction of the applied magnetic field. This design effectively eliminates the interference of the Lorentz force on the charge transport process on the ion exchange membrane. At this time, the reference electrode is fixed to the electrode hole above the working cell, and the counter electrode is fixed to the electrode hole above the counter cell.

[0036] According to one embodiment of this application, when in a single-cell structure, the working electrode, reference electrode, and counter electrode are all located in the main body of the reaction cell; when in a dual-cell structure, the reference electrode is located in the main body of the reaction cell, and the counter electrode is fixed to the main body of the counter cell.

[0037] In one embodiment, the working cell and the counter cell are placed parallel to each other in a relatively uniform magnetic field.

[0038] According to one embodiment of this application, the electrode and gas-liquid circulation module includes a reaction tank cover and a counter tank cover. The reaction tank cover is connected to the reaction tank body. When in a single-tank structure, the reaction tank cover is used to install a reference electrode, a counter electrode, and part of the gas / liquid circulation pipeline. When in a dual-tank structure, the reaction tank cover is used to install a reference electrode and part of the gas / liquid circulation pipeline. The counter tank cover is connected to the counter tank body and is used to install a counter electrode and part of the gas / liquid circulation pipeline.

[0039] Understandably, the reaction cell cover and counter cell cover of the electrode and gas / liquid circulation module are used to clamp and fix the reference electrode, counter electrode, and gas / liquid circulation pipeline, ensuring the stable operation of the system's electrochemical function.

[0040] The reaction tank cover and the counter tank cover are equipped with electrode fixing holes (for installing reference and counter electrodes) and pipeline fixing holes (for connecting inlet / outlet gas and inlet / outlet liquid pipelines). Unused holes can be sealed with plugs.

[0041] According to one embodiment of this application, an end plate and a gasket are included. When in a single-cell structure, the end plate and gasket are connected to the reaction cell body to close the opening of the reaction cell body toward the opposite cell body.

[0042] According to one embodiment of this application, the magnet module includes a fixed base and a magnet. The fixed base is mounted on the main body of the reaction tank, and the magnet is detachably connected to the fixed base. It is understood that the magnetic field strength on the surface of the working electrode can be adjusted by replacing magnets with different magnetic field strengths.

[0043] In one embodiment, the magnet module includes a fixing slot connected to the opposite side of the fixing base to fix the magnet located between the fixing slot and the fixing base.

[0044] According to one embodiment of this application, the attenuating total reflection crystal module includes a fixing member, a flat fixing plate, and a silicone gasket; the fixing member is used to clamp and fix the attenuating total reflection crystal on the flat fixing plate, and the side of the flat fixing plate facing away from the main body of the reaction cell is provided with a groove to ensure that the infrared beam can be incident on the fixed attenuating total reflection crystal without obstruction.

[0045] According to one embodiment of this application, the reaction cell module, the attenuated total reflection crystal module, the electrode and gas-liquid circulation module, and the magnet module are all fastened with non-magnetic screws.

[0046] A system for in-situ magnetic field electrochemical infrared spectroscopy testing according to an embodiment of this application includes: An electrochemical circuit system includes an electrochemical workstation and the aforementioned reaction cell for in-situ magnetic field electrochemical infrared spectroscopy testing; the electrochemical workstation is used to apply electrochemical signals to the reaction cell for in-situ magnetic field electrochemical infrared spectroscopy testing and to acquire electrochemical data. The infrared optical path system includes a Fourier transform infrared spectrometer and an infrared optical path attenuation total reflection device. The Fourier transform infrared spectrometer is used to generate an infrared beam and detect the attenuation signal after attenuation total reflection. After the infrared beam passes through the infrared optical path attenuation total reflection device, it is directed towards the attenuation total reflection crystal and reflected back to the infrared optical path attenuation total reflection device, and then directed towards the Fourier transform infrared spectrometer.

[0047] According to one embodiment of this application, the in-situ electrolysis testing system further includes a computer, which is used to control the operation of the Fourier transform infrared spectrometer and the electrochemical workstation, and to collect data generated by the Fourier transform infrared spectrometer and the electrochemical workstation.

[0048] In one embodiment, the computer is used to centrally control the electrochemical workstation and the Fourier transform infrared spectrometer (FTIR); specifically, this includes coordinating the start and stop of the electrocatalytic reaction, setting current / voltage parameters, starting and stopping the FTIR spectroscopy test and setting parameters, as well as acquiring and processing the obtained infrared spectral data.

[0049] The electrochemical workstation is responsible for generating and acquiring signals from the electrocatalytic circuit. In one embodiment, the electrochemical workstation is controlled by a computer, driving and controlling the electrocatalytic reaction through a three-electrode system.

[0050] Fourier transform infrared spectrometers are computer-controlled and equipped with built-in infrared light sources, monochromators, and signal detectors to generate wavelength-controlled infrared beams as probes and detect signal changes.

[0051] The infrared light path attenuation total reflection device is equipped with a dedicated adjustable light path, which uses a built-in reflection system to precisely guide the infrared beam to the preset detection position of the attenuation total reflection crystal.

[0052] The wavelength-tunable monochromatic infrared light emitted by the Fourier transform infrared spectrometer is guided by an infrared optical path attenuation total internal reflection device and incident on a specific position of the attenuation total internal reflection crystal. This beam undergoes attenuation total internal reflection on the gold-plated surface of the crystal, interacts with adsorbed species on the surface, and the reflected light carrying adsorption information returns to the detector of the Fourier transform infrared spectrometer via the outgoing optical path to obtain the attenuation signal.

[0053] The surface of the attenuating total internal reflection crystal needs to be pre-plated with gold, and then the electrocatalyst to be tested is loaded onto the gold-plated surface. This design simultaneously achieves attenuated total internal reflection of infrared light, surface enhancement effect of infrared signal, and conduction of electrochemical circuit.

[0054] The reaction cell used for in-situ magnetic field electrochemical infrared spectroscopy is connected to a gas and / or liquid circulation path to promote mass transfer, and contains sufficient electrolyte to form an ion pathway. The gold-plated surface of the attenuating total reflection crystal serves as the working electrode, and together with the reference electrode and counter electrode, it is connected to the electrochemical workstation to form a complete electronic pathway.

[0055] In one embodiment, the attenuating total internal reflection crystal module comprises an "I"-shaped fixing member and a flat fixing plate. The "I"-shaped fixing member is used to clamp the attenuating total internal reflection crystal and securely mount it onto the flat fixing plate; the flat fixing plate is used to position the entire crystal fixing module on the electrolytic cell, ensuring accurate and repeatable crystal positioning. The flat fixing plate has a groove on the side facing away from the electrolytic cell to ensure unobstructed and complete incident infrared beams onto the attenuating total internal reflection crystal. A silicone gasket is placed between the flat fixing plate and the electrolytic cell body to ensure liquid sealing.

[0056] In one embodiment, the magnet module is used for the convenient assembly and disassembly of magnets, reliable fixation, and precise adjustment of their spatial position, thereby enabling the controllable application of a magnetic field.

[0057] The electrode and gas / liquid circulation fixing module is used to clamp and fix the reference electrode, counter electrode, and gas / liquid circulation pipeline to ensure the stable operation of the electrochemical system.

[0058] In one embodiment, all interfaces are fastened with non-magnetic screws to avoid introducing additional magnetic fields or interfering with the magnetic field distribution.

[0059] The reaction cell module can be easily switched between a single-cell structure and a dual-cell structure to contain the electrolyte solution and form an electrochemical circuit. When using the dual-cell structure, the connection direction of the ion exchange membranes between the two cells is set to be parallel to the direction of the applied magnetic field, thereby effectively eliminating the influence of the Lorentz force on the charge transport process on the ion exchange membrane.

[0060] It should be noted that although this invention uses the in-situ infrared characterization of the electrocatalytic carbon dioxide reduction reaction as an example, its application scope is not limited to this and can be applied to the in-situ study of various electrocatalytic oxidation or reduction reactions.

[0061] Figure 4 This application provides data on the variation of current density under different magnetic field conditions for one embodiment of the present application.

[0062] Figure 5 In-situ ATR-SEIRAS spectroscopic data of electrocatalytic intermediates under magnetic field regulation under different magnetic field conditions provided in one embodiment of this application.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A reaction cell for in-situ magnetic field electrochemical infrared spectroscopy testing, characterized in that, include: The reaction cell module includes the main body of the reaction cell, the main body of the counter cell, and the ion exchange membrane; An attenuating total internal reflection crystal module is connected to the main body of the reaction cell. The attenuating total internal reflection crystal module is used to fix the attenuating total internal reflection crystal, and the surface of the fixed attenuating total internal reflection crystal is the working electrode. An electrode and gas-liquid circulation module covers the reaction cell module and is used to clamp and fix the reference electrode, the counter electrode, and the gas / liquid circulation pipeline. A magnet module is connected to the main body of the reaction tank, and the magnet module is configured to have an adjustable magnetic field strength on the working electrode; The reaction cell module is configured to switch between a single-cell structure and a dual-cell structure; when in the dual-cell structure, the main body of the reaction cell and the main body of the paired cell are connected, and the main body of the reaction cell and the main body of the paired cell are connected through an ion exchange membrane, and the main direction of ion migration on the ion exchange membrane is set to be parallel to the direction of the magnetic field applied by the magnet module; when in the single-cell structure, the main body of the paired cell is separated from the main body of the reaction cell.

2. The reaction cell for in-situ magnetic field electrochemical infrared spectroscopy testing according to claim 1, characterized in that, When in the single-cell structure, the working electrode, reference electrode, and counter electrode are all located in the main body of the reaction cell; when in the dual-cell structure, the reference electrode is located in the main body of the reaction cell, and the counter electrode is fixed to the main body of the counter cell.

3. The reaction cell for in-situ magnetic field electrochemical infrared spectroscopy testing according to claim 2, characterized in that, The electrode and gas-liquid circulation module includes a reaction tank cover and a counter tank cover. The reaction tank cover is connected to the main body of the reaction tank. In the single-tank structure, the reaction tank cover is used to install the reference electrode, the counter electrode, and part of the gas / liquid circulation pipeline. In the dual-tank structure, the reaction tank cover is used to install the reference electrode and part of the gas / liquid circulation pipeline. The counter tank cover is connected to the main body of the counter tank and is used to install the counter electrode and part of the gas / liquid circulation pipeline.

4. The reaction cell for in-situ magnetic field electrochemical infrared spectroscopy testing according to claim 1, characterized in that, The magnet module includes a fixed base and a magnet. The fixed base is installed on the main body of the reaction tank, and the magnet is detachably connected to the fixed base.

5. The reaction cell for in-situ magnetic field electrochemical infrared spectroscopy testing according to claim 1, characterized in that, The attenuating total reflection crystal module includes a fixing component, a flat fixing plate, and a silicone gasket. The fixing component is used to clamp and fix the attenuating total reflection crystal on the flat fixing plate. The flat fixing plate has a groove on the side facing away from the main body of the reaction cell to ensure that the infrared beam can be incident on the fixed attenuating total reflection crystal without obstruction.

6. The reaction cell for in-situ magnetic field electrochemical infrared spectroscopy testing according to any one of claims 1 to 5, characterized in that, The reaction cell module, the attenuated total reflection crystal module, the electrode and gas-liquid circulation module, and the magnet module are all fastened with non-magnetic screws.

7. A system for in-situ magnetic field electrochemical infrared spectroscopy testing, characterized in that, include: An electrochemical circuit system, comprising an electrochemical workstation and a reaction cell for in-situ magnetic field electrochemical infrared spectroscopy testing according to any one of claims 1 to 8; The electrochemical workstation is used to apply electrochemical signals to the reaction cell used for in-situ magnetic field electrochemical infrared spectroscopy testing and to acquire electrochemical data. The infrared optical path system includes a Fourier transform infrared spectrometer and an infrared optical path attenuation total reflection device. The Fourier transform infrared spectrometer is used to generate an infrared beam and detect the reflected light after attenuation total reflection. After passing through the infrared optical path attenuation total reflection device, the infrared beam is directed towards the attenuation total reflection crystal and reflected back to the infrared optical path attenuation total reflection device, and then directed towards the Fourier transform infrared spectrometer.

8. The system for in-situ magnetic field electrochemical infrared spectroscopy testing according to claim 7, characterized in that, The in-situ electrolysis testing system also includes a computer, which is used to control the operation of the Fourier transform infrared spectrometer and the electrochemical workstation, and to collect the data generated by the Fourier transform infrared spectrometer and the electrochemical workstation.

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