CN217026095U - Electrochemical testing device and system for hydrogen production by electrolyzing water - Google Patents
Electrochemical testing device and system for hydrogen production by electrolyzing water Download PDFInfo
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- CN217026095U CN217026095U CN202220142936.8U CN202220142936U CN217026095U CN 217026095 U CN217026095 U CN 217026095U CN 202220142936 U CN202220142936 U CN 202220142936U CN 217026095 U CN217026095 U CN 217026095U
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Abstract
The utility model relates to an electrochemical test device and system for hydrogen production by water electrolysis, which simulate the flow state of oxygen or hydrogen in the hydrogen production process by water electrolysis, and through the device, hydrogen or oxygen with different flow rates is introduced in the electrochemical test process of a sample material, the water-gas state in the actual operation process of fuel cells and hydrogen production by water electrolysis is simulated, and the electrochemical performance of the sample under different conditions is explored; meanwhile, electrolyte fluctuation caused by gas introduction in the testing process is improved, the gas passes through the uneven surface of the electrode, and the stability and consistency of the electrochemical test are kept; and in the process of testing the durability of the bipolar plate and the current collector sample material, the data information of the sample material closest to the actual running state is tested.
Description
Technical Field
The utility model belongs to the technical field of electrochemical testing devices, and particularly relates to an electrochemical testing device and system for hydrogen production by water electrolysis.
Background
In the prior art, in the preparation process of the solid electrolyte water electrolysis (SPEWE) hydrogen production bipolar plate and current collector material, the performance evaluation mode of the material is to carry out electrochemical performance test by a three-electrode system. In the actual operation process, the water electrolysis efficiency can be reduced by the flowing transmission of gas, and the power of a single pile is reduced. Meanwhile, the bipolar plate and the current collector coating materials are washed away, so that the coating falls off, and an oxidation film and a passive film are generated and thickened, therefore, in the evaluation process of the polar plate and the current collector materials, especially in the durability test of the materials, gas introduction simulation is indispensable.
In the process of preparing different materials, the conditions of different thicknesses and different test areas can be involved, part of samples are porous materials, the electrolyte can be disturbed by introducing gas in the process of producing hydrogen by electrolyzing water in the traditional test, and the gas can not be ensured to uniformly pass through the surface of an electrode, so that the electrochemical performance test result is not accurate enough. Therefore, it is necessary to provide a simulation test apparatus which can meet the requirements.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an electrochemical testing device and system for hydrogen production by water electrolysis, which are used for solving the problems in the prior art.
An electrochemical testing device for hydrogen production by water electrolysis comprises an upper clamping plate and a lower clamping plate which are oppositely arranged;
the inner surface of the lower clamping plate is provided with a first groove for embedding a sample to be tested;
an empty groove is formed in the middle of the first groove, and an air hole communicated with the empty groove is formed in the top of the lower clamping plate;
and a second groove communicated with the first groove is also formed in the inner surface of the lower clamping plate.
The above aspect and any possible implementation further provide an implementation in which the air hole is disposed at any position around the lower splint.
The above aspect and any possible implementation manner further provide an implementation manner, wherein a plurality of positioning through holes are correspondingly arranged at the periphery of the upper clamping plate and the lower clamping plate, and are used for fixing the upper clamping plate and the lower clamping plate.
The above aspect and any possible implementation further provide an implementation in which an area of the first groove is larger than an area of the empty groove.
The above aspect and any possible implementation manner further provide an implementation manner, wherein a depth of the first groove is smaller than a depth of the sample to be tested, and an area of the first groove is larger than or equal to an area of the sample to be tested.
The above aspect and any possible implementation manner further provide an implementation manner, where a through hole groove is provided on the upper clamping plate corresponding to the empty groove of the lower clamping plate, and an area of the hole groove is greater than or equal to an area of the sample to be tested.
The above aspect and any possible implementation manner further provide an implementation manner, further including screws that are matched with the plurality of positioning through holes, and the length of each screw is greater than or equal to the sum of the thicknesses of the upper and lower clamping plates.
The above aspect and any possible implementation further provide an implementation in which an edge of the first groove is located no further than an outer diameter of the screw from an edge of the lower plate.
The above aspects and any possible implementations further provide an implementation in which a gasket for sealing is provided between the upper and lower jaws.
The utility model also provides an electrochemical test system for hydrogen production by water electrolysis, which comprises the electrochemical test device for hydrogen production by water electrolysis, an electrode lead and a vent pipe, wherein the electrode lead is arranged in the second groove and is connected with a sample to be tested; the breather pipe inserts in the air vent on the lower plate for let in the gas of different flow.
The utility model has the advantages of
Compared with the prior art, the utility model has the following beneficial effects:
the device of the utility model is used for introducing hydrogen or oxygen with different flow rates in the electrochemical test process of sample materials, simulating the water-gas state in the actual operation process of fuel cells and electrolytic water hydrogen production, and exploring the electrochemical performance of the sample under different conditions. Meanwhile, the condition that electrolyte fluctuation is caused by ventilation in the testing process and gas passes through the surface of the electrode unevenly is improved, and the stability and consistency of the electrochemical test are kept; in the process of testing the durability of the bipolar plate and the current collector sample material, the data information of the sample material which is closest to the actual operation state is tested.
Drawings
FIG. 1 is a schematic view of the upper jaw of the present invention;
FIG. 2 is a schematic view of the construction of the lower splint of the present invention;
FIG. 3 is a schematic front view of the lower plate of the present invention;
fig. 4 is a schematic front view of the upper plate of the present invention.
Detailed Description
In order to better understand the technical solution of the present invention, the summary of the utility model includes but is not limited to the following detailed description, and similar techniques and methods should be considered as within the scope of the present invention. To make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
It should be understood that the described embodiments of the utility model are only some of the described embodiments of the utility model, and not all of the described embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in the description of the utility model and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
As shown in fig. 1 to 4, an electrochemical testing device for hydrogen production by water electrolysis comprises an upper clamping plate a and a lower clamping plate B which are oppositely arranged; the inner surface of the lower clamping plate B is provided with a hollow groove 1 for ventilating the clamped sample to be tested; the top of the lower splint B is provided with an air hole 2 which is communicated with the middle empty groove 1 and is used for inserting an air pipe and introducing air; a groove 3 is carved in the middle of the surface of the lower clamping plate B and is used for embedding a sample to be tested; the inner surface of the lower clamping plate B is provided with a groove 4 which is communicated with the middle groove 3 and the top of the lower clamping plate B, a three-electrode test lead is arranged in the groove 4, one end of the lead is connected with a sample to be tested, and the other end of the lead is connected with an external three-electrode working electrode.
Preferably, positioning through holes are formed in the peripheries of the upper clamping plate A and the lower clamping plate B, plastic nylon screws 5 are arranged and used for being screwed in to fix the upper clamping plate A and the lower clamping plate B, the length of each screw is larger than or equal to the sum of the thicknesses of the upper clamping plate A and the lower clamping plate B, and the distance between the upper clamping plate A and the lower clamping plate B is adjusted through the plastic nylon screws 5.
Preferably, the test device further comprises rubber gaskets 6 provided in the upper and lower jaws a and B for sealing the entire test device.
Preferably, the depth of the groove 3 on the surface of the lower clamping plate B is smaller than the thickness of the sample to be tested, so that the sample to be tested can be fixed after the upper clamping plate A is covered.
Preferably, the area of the groove 3 on the surface of the lower clamping plate B is larger than that of the middle empty groove 1, the distance between the edge of the groove 3 and the edge position is larger than the diameter of the screw 5 or the diameter of the positioning through hole, and the diameter of the screw 5 is selected to be 4 mm.
Preferably, the grooves 4 in the lower jaw B are the same depth as the grooves 3 and lead to the top outer edge of the lower jaw B.
Preferably, the lower splint B is provided with air holes 2 for communicating the middle empty groove 1 with the outer edge of the top of the lower splint B, and the air holes can be arranged at the periphery of the lower splint B according to the installation requirement.
Preferably, the middle part of the upper clamping plate A is provided with a through hole, the area of the through hole is equal to the area of the tested sample, and the through hole is the same as the middle empty groove 1 of the lower clamping plate B in size and corresponds to the middle empty groove.
The utility model also provides an electrochemical test system for hydrogen production by water electrolysis, which comprises the electrochemical test device for hydrogen production by water electrolysis, a three-electrode test lead and a vent pipe, wherein the three-electrode test lead is arranged in the second groove and is used for connecting a sample to be tested and placing the sample to be tested in the test device; the vent pipe is inserted into the air hole 2 on the lower clamping plate B and is used for introducing gas with different flow rates, and the gas is hydrogen or oxygen.
The method or principle of use of the utility model is as follows
When the device is used, a sample to be tested is placed in a groove on the surface of a lower clamping plate B, namely the sample to be tested is inlaid on the lower clamping plate B, the edge of the sample to be tested is sealed by using a rubber gasket 6, the sample to be tested is in a convex shape, the protruding part of the sample to be tested is connected through a three-electrode test wire placed in a groove 4, or a conductor made of the same material as the sample to be tested is used as a wire, an upper clamping plate A is buckled on the sample to be tested, positioning through holes on the periphery of the upper clamping plate and the lower clamping plate are screwed by using plastic nylon screws 5, so that the upper clamping plate and the lower clamping plate are clamped and fixed, the vent pipe is inserted into an air hole 2 on the lower clamping plate B, the whole device is placed in a three-electrode system to simulate an electrolyzed water hydrogen production environment, and the assembly is completed. The sample to be tested is a titanium felt material and has small porosity and small gas quantity, and the sample to be tested is a titanium mesh material and has large porosity and large gas quantity.
The foregoing description shows and describes several preferred embodiments of the utility model, but as aforementioned, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (10)
1. The electrochemical testing device for hydrogen production by water electrolysis is characterized by comprising an upper clamping plate and a lower clamping plate which are oppositely arranged;
the inner surface of the lower clamping plate is provided with a first groove for embedding a sample to be tested;
an empty groove is formed in the middle of the first groove, and an air hole communicated with the empty groove is formed in the top of the lower clamping plate;
and a second groove communicated with the first groove is also arranged on the inner surface of the lower clamping plate.
2. The electrochemical testing device for hydrogen production by electrolyzing water as claimed in claim 1, wherein said air holes are provided at any position around said lower clamping plate.
3. The electrochemical test device for hydrogen production by electrolyzing water as in claim 1, wherein a plurality of positioning through holes are correspondingly arranged around the upper and lower clamping plates for fixing the upper and lower clamping plates.
4. The electrochemical test device for hydrogen production by electrolysis of water according to claim 1, wherein the area of the first groove is larger than the area of the empty groove.
5. The electrochemical test device for hydrogen production by electrolysis of water according to claim 1, wherein the depth of the first groove is smaller than the depth of the sample to be tested, and the area is equal to or larger than the area of the sample to be tested.
6. The electrochemical testing device for hydrogen production by electrolyzing water as claimed in claim 1, wherein a through hole groove is provided at a position corresponding to the empty groove on the upper clamping plate, and the area of the hole groove is larger than or equal to the area of the sample to be tested.
7. The electrochemical testing device for hydrogen production by electrolyzing water as in claim 3, further comprising screws matching with the plurality of positioning through holes, wherein the length of the screws is greater than or equal to the sum of the thicknesses of the upper and lower clamping plates.
8. The electrochemical test device for hydrogen production by electrolyzing water as in claim 7, wherein the distance from the first groove to the edge of the lower clamping plate is not more than the outer diameter of the screw.
9. The electrochemical test device for hydrogen production by electrolyzing water as claimed in claim 1, wherein a gasket for sealing is provided between the upper and lower clamping plates.
10. An electrochemical test system for hydrogen production by water electrolysis, which is characterized by comprising the electrochemical test device for hydrogen production by water electrolysis, an electrode lead and a vent pipe, wherein the electrode lead is arranged in the second groove and is connected with a sample to be tested; the breather pipe inserts in the gas hole on the lower plate for let in the gas of different flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220142936.8U CN217026095U (en) | 2022-01-19 | 2022-01-19 | Electrochemical testing device and system for hydrogen production by electrolyzing water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220142936.8U CN217026095U (en) | 2022-01-19 | 2022-01-19 | Electrochemical testing device and system for hydrogen production by electrolyzing water |
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| Publication Number | Publication Date |
|---|---|
| CN217026095U true CN217026095U (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220142936.8U Active CN217026095U (en) | 2022-01-19 | 2022-01-19 | Electrochemical testing device and system for hydrogen production by electrolyzing water |
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| Country | Link |
|---|---|
| CN (1) | CN217026095U (en) |
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- 2022-01-19 CN CN202220142936.8U patent/CN217026095U/en active Active
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