CN211928122U - Test board for single-electrode electrochemical test under fuel cell working state - Google Patents
Test board for single-electrode electrochemical test under fuel cell working state Download PDFInfo
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- CN211928122U CN211928122U CN202020365739.3U CN202020365739U CN211928122U CN 211928122 U CN211928122 U CN 211928122U CN 202020365739 U CN202020365739 U CN 202020365739U CN 211928122 U CN211928122 U CN 211928122U
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Abstract
The utility model discloses a test board for single electrode electrochemistry test under fuel cell operating condition, the positive middle part of test board is formed with the fuel cavity, is formed with fence structure on the opening of fuel cavity, and one side of test board forms the electrode jack that is used for inserting the reference electrode, and the electrode jack communicates the fuel cavity, and the electrode jack internal surface is formed with insulating coating; the test plate is also provided with a fuel inlet and a fuel outlet which are communicated with the fuel chamber. The utility model discloses survey test panel can be used for testing fuel cell's single electrode's electrode potential under operating condition to the accuracy detects single electrode's under the fuel cell actual operating condition performance parameter.
Description
Technical Field
The utility model relates to an electrochemistry testing tool specifically relates to a survey test panel that is used for single electrode electrochemistry test under the fuel cell operating condition.
Background
As a power generation device which has zero pollution and high efficiency and directly converts chemical energy of fuel into electric energy, a fuel cell is increasingly applied to a plurality of fields of automobiles, distributed power stations, rockets and the like, and is ideal sustainable energy equipment which is hopeful to replace energy of a combustion system in various energy terminal equipment at present.
The core power generation component of the fuel cell is a Membrane Electrode Assembly (MEA), the MEA is composed of five layers of diffusion layer carbon paper, anode catalyst, solid electrolyte membrane, cathode catalyst and cathode carbon paper on the anode side, electrodes are manufactured through GDE, CCM and other processes, and finally the electrodes are hot-pressed together. The fuel is introduced into the anode side, the oxygen or the air is introduced into the cathode side, and the conversion from chemical energy to electric energy is realized by adding an external circuit. The conversion process involves a complex electrochemical principle, the manufacturing process of each material or process has a great influence on the performance of the battery, and the basic research on the electrochemical principle and the kinetics of the battery is needed to improve the performance of the battery.
In the existing electrochemical detection system, the performance of the catalyst is evaluated mainly by testing a rotating disk electrode or preparing a membrane electrode MEA (membrane electrode assembly) to test the discharge performance.
Electrochemical testing of membrane electrodes was evaluated mainly by a three-electrode system. The three-electrode system mainly comprises a working electrode, a reference electrode and an auxiliary electrode. The working electrode is also referred to as the research electrode or the test electrode. The rules of the electrochemical reaction, the adsorption and other interface reactions of the electrode are obtained by measuring the potential of the working electrode. Since there is no experimental or theoretical method to determine the absolute value of the potential of a single electrode, but an electrode with a stable potential can be used as a reference to measure the relative value of the electrode potential of any electrode, we refer to the reference electrode as a reference electrode. When the fuel cell is used, the reference electrode is close to the working electrode as much as possible so as to reduce the voltage drop of the fuel cell when current passes through the fuel cell. Experiments with different reference electrodes will result in different electrode potentials. The auxiliary electrode, also called counter electrode, serves to pass an electric current to achieve polarization of the working electrode. The auxiliary electrode cannot affect the working electrode. Its surface area should be larger than the working electrode.
For a fuel cell, a normal three-electrode detection method can only test the result of the performance superposition of the cathode and the anode of a membrane electrode, but when the fuel cell works, parameters such as electrode potential, active area and the like of a single electrode cannot be detected by a method, so that the method for searching for improving the performance is hindered; when the membrane electrode has performance problems, it is impossible to distinguish whether the membrane electrode is present at the cathode or the anode. This causes unnecessary trouble and much unnecessary work for the subsequent exploration.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a survey test panel for single electrode electrochemistry test under fuel cell operating condition is convenient for under fuel cell operating condition, tests fuel cell's single electrode's electrode potential to the accuracy detects the performance parameter of single electrode under fuel cell actual operating condition.
The technical scheme of the utility model is realized like this:
a test board for single-electrode electrochemical testing under a fuel cell working state is characterized in that a fuel chamber is formed in the middle of the front face of the test board, a fence structure is formed on an opening of the fuel chamber, an electrode jack for inserting a reference electrode is formed on one side of the test board, the electrode jack is communicated with the fuel chamber, and an insulating coating is formed on the inner surface of the electrode jack; the test plate is also provided with a fuel inlet and a fuel outlet, and the fuel inlet and the fuel outlet are communicated with the fuel cavity.
Further, the test board is rectangular, square or circular.
Further, the material of the test board is graphite or metal.
Furthermore, the electrode jack is divided into two sections, the inner diameter of one section far away from the fuel cavity is larger than that of one section close to the fuel cavity, and the two sections are connected through a slope.
Further, the material of the insulating coating is a polymer with soft property.
Further, the fuel inlet and the fuel outlet are located on two opposite sides of the test plate, the fuel inlet and the fuel outlet are located on different sides of the electrode insertion hole, a height difference is formed between the fuel inlet and the fuel outlet, and the fuel outlet is close to the electrode insertion hole.
Further, the fuel inlet and the fuel outlet are threaded on the inside.
The utility model has the advantages that: the utility model provides a survey test panel for single electrode electrochemistry test under fuel cell operating condition forms the fuel cavity through the positive middle part of surveying the board to form the electrode jack in one side of surveying the board, can insert the reference electrode in the electrode jack, in order to realize under fuel cell operating condition, measure fuel cell's single electrode's electrode potential, thereby can accurately detect the performance parameter of single electrode under the fuel cell actual operating condition. Compared with the prior art, the utility model provides a fuel cell can only test the performance parameter under the fuel cell (membrane electrode) whole operating condition, and can not test single electrode performance parameter's under the operating condition problem. The utility model is suitable for an all fuels detect for liquid fuel cell, simultaneously, can realize that the fuel cell of liquid operation also is within this application scope who surveys test panel.
Drawings
FIG. 1 is a perspective view of a test board for electrochemical testing of a single electrode in a working state of a fuel cell according to the present invention;
FIG. 2 is a front view of the test board for electrochemical testing of single electrode in the operating state of fuel cell of the present invention;
FIG. 3 is a left side view of the test board for electrochemical testing of single electrode in the operating state of fuel cell according to the present invention;
FIG. 4 is a top view of the test board for electrochemical testing of single electrode in the operating state of fuel cell according to the present invention;
the following description is made with reference to the accompanying drawings:
1-fuel chamber, 2-fence structure, 3-electrode jack, 4-insulating coating, 5-fuel inlet, 6-fuel outlet.
Detailed Description
In order to describe the present invention more clearly, it is convenient to understand the technical solution of the present invention, and the following detailed description is made on the present invention through the specific implementation manner with reference to the accompanying drawings. The following embodiments are merely exemplary of the present invention and do not represent or limit the scope of the present invention, which is defined by the claims.
As shown in fig. 1, 2, 3 and 4, a test board for a single electrode electrochemical test in a fuel cell working state, a fuel chamber 1 is formed in the middle of the front surface of the test board, a fence structure 2 is formed on an opening of the fuel chamber, an electrode jack 3 for inserting a reference electrode is formed on one side of the test board, the electrode jack is communicated with the fuel chamber, and an insulating coating 4 is formed on the inner surface of the electrode jack; the test plate is also provided with a fuel inlet 5 and a fuel outlet 6, and the fuel inlet and the fuel outlet are communicated with the fuel cavity. Like this, through forming the fuel cavity at the positive middle part of surveying the board, form fence structure on opening of fuel cavity, can be used for fuel cell's test, through forming the electrode jack in one side of surveying the board, can insert the reference electrode in the electrode jack to the realization is under fuel cell operating condition, measures the electrode potential of single electrode of fuel cell, thereby can accurately detect the performance parameter of single electrode under fuel cell actual operating condition. Compared with the prior art, the utility model provides a fuel cell can only test the performance parameter under the fuel cell (membrane electrode) whole operating condition, and can not test single electrode performance parameter's under the operating condition problem. The utility model is suitable for an all fuels detect for liquid fuel cell, simultaneously, can realize that the fuel cell of liquid operation also is within this application scope who surveys test panel.
In the structure, the fence structure is used for supporting the membrane electrode to be tested, for example, the fence structure is a plurality of parallel railings arranged at intervals, and the railings protrude inwards to the fuel chamber, so that the surface of the test board is smooth and flat, and thus the fence structure and another test board can clamp the membrane electrode together, so that fuel can enter the membrane electrode through the fence structure.
In the structure, the insulating coating in the electrode jack is used for preventing the reference electrode from being directly connected with the test board body to influence the measurement, and simultaneously can play a role in clamping the reference electrode to prevent fuel in the fuel chamber from overflowing from the electrode jack.
Preferably, the test plate is rectangular or square or circular. But is not limited to, other regular or irregular shape designs are also possible.
Preferably, the material of the test board is graphite or metal. But not limited thereto, the material from which the test panel is made may also be other electrically conductive materials that can be processed into a fixed shape.
Preferably, the test plate is a square graphite plate.
Preferably, the electrode insertion hole is divided into two sections, the inner diameter of one section far away from the fuel cavity is larger than that of one section close to the fuel cavity, and the two sections are connected through a slope. The electrode receptacles communicate with the fuel chambers of the test plate for insertion of the reference electrode from outside the test plate into the fuel chambers inside the test plate. The insertion hole is divided into two sections, for example, 2/3 the length of one section far away from the fuel cavity accounts for the total length, 1/3 the length of one section near the fuel cavity accounts for the total length, meanwhile, the inner diameter of one section far away from the fuel cavity is designed to be larger than that of one section near the fuel cavity, and a certain gradient is formed between the two sections, so that the insertion depth of the reference electrode can be controlled, and the reference electrode can be clamped.
Preferably, the material of the insulating coating is a polymer with soft property. For example, the material may be rubber, and the insulating coating may have a certain sealing and insulating effect due to its soft nature.
As a preferred embodiment, the testing board is square, the fuel inlet and the fuel outlet are located on two opposite sides of the testing board, such as on the left and right sides, and the electrode insertion hole is located on the upper or lower side, so that the fuel inlet and the fuel outlet are located on different sides from the electrode insertion hole, which facilitates the testing operation, a height difference is formed between the fuel inlet and the fuel outlet, and the fuel outlet is close to the electrode insertion hole.
Preferably, the fuel inlet and the fuel outlet are threaded on the inside. In this way, the fuel inlet and the fuel outlet can be quickly connected to the means for storing fuel by means of the coupling.
Use the utility model discloses when surveying the test panel and carrying out single electrode electrochemistry test under the fuel cell operating condition, with the membrane electrode centre gripping between two survey test panels, set up insulating backing plate around the membrane electrode, separation negative and positive pole direct contact, insert the reference electrode in the electrode jack of surveying the test panel, the fuel cavity of surveying the panel lets in fuel, let in oxygen in another piece survey the fuel cavity of surveying the panel, let the membrane electrode be in normal operating condition, can realize under fuel cell operating condition, measure the electrode potential of the single electrode (negative pole or positive pole) of membrane electrode, thereby can accurately detect the performance parameter of single electrode under the fuel cell actual operating condition. Furthermore, a three-electrode system is established by matching with an electrochemical workstation and a single electrode, so that the testing of various performances of the single electrode under the working state of the fuel cell can be realized, and the comprehensive performance evaluation of the electrode active substance is facilitated. Meanwhile, by matching the existing three-electrode system test method, the performance parameters of the cathode single electrode and the anode single electrode can be obtained simultaneously.
The utility model discloses easy operation, easy maintenance not only is fit for experienced scientific research personnel and uses, also is fit for the beginner and uses.
The above embodiments are described in detail with reference to the accompanying drawings, and those skilled in the art will be able to make various modifications and changes to the above embodiments without departing from the spirit of the present invention.
Claims (7)
1. A test board for single-electrode electrochemical testing of fuel cells in operating condition, comprising: a fuel chamber (1) is formed in the middle of the front face of the test board, a fence structure (2) is formed on an opening of the fuel chamber, an electrode jack (3) for inserting a reference electrode is formed in one side of the test board, the electrode jack is communicated with the fuel chamber, and an insulating coating (4) is formed on the inner surface of the electrode jack; the test plate is also provided with a fuel inlet (5) and a fuel outlet (6), and the fuel inlet and the fuel outlet are communicated with the fuel cavity.
2. The test plate for the electrochemical testing of single electrodes in the operating state of a fuel cell according to claim 1, characterized in that: the test board is rectangular, square or circular.
3. The test plate for the electrochemical testing of single electrodes in the operating state of a fuel cell according to claim 1, characterized in that: the test board is made of graphite or metal.
4. The test plate for the electrochemical testing of single electrodes in the operating state of a fuel cell according to claim 1, characterized in that: the electrode jack is divided into two sections, the inner diameter of one section far away from the fuel cavity is larger than that of one section close to the fuel cavity, and the two sections are connected through a slope.
5. The test plate for the electrochemical testing of single electrodes in the operating state of a fuel cell according to claim 1, characterized in that: the material of the insulating coating is a polymer with soft property.
6. The test plate for the electrochemical testing of single electrodes in the operating state of a fuel cell according to claim 1, characterized in that: the fuel inlet and the fuel outlet are located on two opposite sides of the test plate, the fuel inlet and the fuel outlet are located on different sides of the electrode insertion hole, a height difference is formed between the fuel inlet and the fuel outlet, and the fuel outlet is close to the electrode insertion hole.
7. The test plate for the electrochemical testing of single electrodes in the operating state of a fuel cell according to claim 1, characterized in that: the fuel inlet and the fuel outlet are internally threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020365739.3U CN211928122U (en) | 2020-03-21 | 2020-03-21 | Test board for single-electrode electrochemical test under fuel cell working state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020365739.3U CN211928122U (en) | 2020-03-21 | 2020-03-21 | Test board for single-electrode electrochemical test under fuel cell working state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211928122U true CN211928122U (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020365739.3U Active CN211928122U (en) | 2020-03-21 | 2020-03-21 | Test board for single-electrode electrochemical test under fuel cell working state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211928122U (en) |
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2020
- 2020-03-21 CN CN202020365739.3U patent/CN211928122U/en active Active
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