Test system of electrode for hydrogen production electrolytic cell

Abstract

The utility model discloses a test system of an electrode for a hydrogen production electrolytic cell, which at least comprises an ultrasonic device comprising a shell, an ultrasonic generating device and a temperature controller; the container is arranged in the ultrasonic equipment, and a test solution is arranged in the container; and the electrode to be tested is soaked in the test solution. According to the test system of the electrode for the hydrogen production electrolytic cell, provided by the utility model, the stability of a catalyst layer on a base material can be accurately tested, and the consistency, the reliability and the accuracy of a test result can also be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrolytic water hydrogen production technical field, specifically related to a kind of electrode's test system for hydrogen production electrolytic cell. BACKGROUND

[0002] At present, electrolytic water as a mature energy conversion technology provides a simple, effective and promising method for hydrogen production, with the advantages of high purity, no pollution and strong controllability.

[0003] In the electrolytic water technology, electrolytic water electrode includes substrate and catalyst layer loaded on substrate, if substrate and catalyst layer are not firmly combined, will hinder the transmission of electric charge, limit the full exposure of catalyst active site, reduce catalyst activity and catalytic efficiency, affect the performance of electrolytic water hydrogen production. Therefore, before the large-scale popularization and application of electrolytic water electrode, a test system is needed to test the combination of substrate and catalyst layer. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of electrode's test system for hydrogen production electrolytic cell, can accurately test the stability of catalyst layer on substrate, also can improve the consistency, reliability and accuracy of test result.

[0005] In order to realize the above-mentioned purpose and other related purposes, the utility model is realized by the following technical schemes.

[0006] The utility model provides a kind of electrode's test system for hydrogen production electrolytic cell, at least includes:

[0007] Ultrasonic equipment, including shell, ultrasonic wave generating device and temperature controller;

[0008] Container, set in the ultrasonic equipment, and test solution is arranged in the container;And the electrode to be measured, is soaked in the test solution.

[0009] In an embodiment of the utility model, the test system further includes clamping equipment, one end of the clamping equipment is connected with the inner wall of the ultrasonic equipment, and the other end clamps the container.

[0010] In an embodiment of the utility model, the ultrasonic frequency of the ultrasonic equipment is 20KHz-60KHz, and the ultrasonic power is 200W-500W.

[0011] In an embodiment of the utility model, medium solution is arranged in the ultrasonic equipment, the medium solution is arranged between the container and the inner wall of the ultrasonic equipment, and the container is placed in the medium solution.

[0012] In an embodiment of the utility model, the liquid level of the test solution in the container is higher than the liquid level of the medium solution in the ultrasonic equipment.

[0013] In an embodiment of the utility model, the temperature of the test solution is 25-35 DEG C, and the ultrasonic equipment processes the to-be-tested electrode for 30-120 minutes.

[0014] In an embodiment of the utility model, the test system further comprises a top cover, and the top cover is arranged on the container.

[0015] In an embodiment of the utility model, the shape of the to-be-tested electrode is polygon, circle or ellipse.

[0016] In conclusion, the utility model provides a kind of electrode test system for hydrogen production electrolytic cell, can accurately measure the exfoliation rate of catalyst layer on substrate, to test the stability of catalyst layer on substrate, to evaluate the performance of water electrolysis hydrogen electrode.And, the electrode test system for hydrogen production electrolytic cell provided by the utility model can improve the consistency, accuracy and reliability of test results.

[0017] Of course, it is not necessary to achieve all the advantages described above while implementing any of the modes of the utility model. DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0019] Figure 1 It is a schematic view of the electrode test system for hydrogen production electrolytic cell in an embodiment of the utility model.

[0020] Figure 2 It is Figure 1 structure schematic view of to-be-tested electrode.

[0021] Label explanation:

[0022] 10, ultrasonic equipment;101, shell;102, cover plate;103, ultrasonic wave generating device;104, temperature controller;20, container;30, test solution;40, to-be-tested electrode;401, substrate;402, catalyst layer;50, medium solution;60, top cover;70, clamping equipment. DETAILED DESCRIPTION

[0023] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this utility model can be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0024] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0025] In this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing 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 this application. Furthermore, the terms "first" and "second" are used only for descriptive and distinguishing purposes and should not be construed as indicating or implying relative importance.

[0026] Please see Figures 1 to 2As shown, the utility model provides a kind of electrode's test system for hydrogen production electrolytic cell, for example including ultrasonic equipment 10, container 20, test solution 30 and electrode 40 to be measured etc..Wherein, container 20 is arranged in ultrasonic equipment 10, test solution 30 is arranged in container 20, electrode 40 to be measured is soaked in test solution 30, and electrode 40 to be measured includes base material 401 and catalyst layer 402 on base material 401.The electrode's test system for hydrogen production electrolytic cell provided by the utility model is treated by ultrasonic equipment 10 to electrode 40 to be measured to strip catalyst layer 402 on base material 401, and the mass of electrode 40 to be measured before and after ultrasonic treatment is measured, so as to obtain the ultrasonic peeling rate of electrode 40 to be measured, with the ultrasonic peeling rate as the basis, the stability of catalyst layer 402 on base material 401 is evaluated, and then the overall performance of electrode 40 to be measured is evaluated.Moreover, the test system provided by the utility model is applied to the test process of various electrolytic cell electrodes, such as alkaline hydrogen production electrolytic cell electrode, proton exchange membrane hydrogen production electrolytic cell electrode, anion exchange membrane hydrogen production electrolytic cell electrode or solid oxide hydrogen production electrolytic cell electrode, seawater hydrogen production electrolytic cell, etc.In this embodiment, alkaline hydrogen production electrolytic cell electrode is taken as an example to illustrate the test system.

[0027] Please refer to Figure 1 As shown, in an embodiment of the utility model, ultrasonic equipment 10 provides place for electrode 40 to be measured to test.In this embodiment, ultrasonic equipment 10 includes shell 101, cover plate 102, ultrasonic wave generating device 103 and temperature controller 104 etc..Wherein, the one end of shell 101 is open, cover plate 102 is detachably arranged in the opening direction of shell 101, to facilitate placing container 20 in shell 101, also can prevent heat in shell 101 from spreading to shell 101 outside, improve the temperature stability of the whole test system, and then improve the consistency, reliability and accuracy of test result.

[0028] Please refer to Figure 1 As shown, in an embodiment of the utility model, ultrasonic wave generating device 103 is arranged on the outer wall of shell 101, as the source of ultrasonic wave of ultrasonic equipment 10.Wherein, ultrasonic wave generating device 103 is for example ultrasonic transducer etc.In this embodiment, ultrasonic wave generating device 103 converts electric energy into high-frequency mechanical vibration after receiving electric energy, and is transmitted into shell 101, so as to realize the emission of ultrasonic wave.Wherein, the ultrasonic frequency of ultrasonic wave generating device 103 is for example 20KHz-60KHz, and ultrasonic power is for example 200W-500W.

[0029] Please refer to Figure 1As shown in the utility model one embodiment, temperature control instrument 104 is arranged on the inner wall of shell 101, to control the temperature of medium solution 50 and test solution 30 arranged in shell 101 subsequently. Specifically, if the temperature of medium solution 50 and test solution 30 is less than the preset value, temperature control instrument 104 starts to start, and directly heats medium solution 50, and after medium solution 50 is heated, the heat is transmitted to test solution 30 through container 20, to indirectly heat test solution 30, and if the temperature of medium solution 50 and test solution 30 is equal to or greater than the preset value, temperature control instrument 104 stops heating. Wherein, the preset value is for example 25-35 DEG C. Through temperature control instrument 104, the temperature of test solution 30 and medium solution 50 is maintained at the preset value, which can make different to-be-tested electrodes 40 test at the same test temperature, and further improve the reliability and consistency of measurement results.

[0030] Please refer to Figure 1 As shown in the utility model one embodiment, container 20 is arranged in ultrasonic equipment 10. Specifically, container 20 is arranged at the center of ultrasonic equipment 10, to accommodate test solution 30 and to-be-tested electrode 40. Wherein, container 20 is for example a glass container such as beaker, conical flask or flask, and the volume of container 20 is for example 100-500 mL, and one end of container 20 is provided with an opening, to facilitate placing test solution 30 in container 20.

[0031] Please refer to Figure 1 As shown in the utility model one embodiment, container 20 is further provided with top cover 60, and top cover 60 is detachably arranged in the opening direction of container 20. Through top cover 60, test solution 30 in container 20 can be protected from being contaminated, and the heat in container 20 can also be prevented from diffusing to ultrasonic equipment 10, to improve the temperature stability of the whole test system, and further improve the consistency, reliability and accuracy of test results.

[0032] Please refer to Figure 1 As shown in the utility model one embodiment, medium solution 50 is arranged between container 20 and the inner wall of ultrasonic equipment 10. Wherein, medium solution 50 is for example tap water or deionized water. By arranging medium solution 50 as the medium of ultrasonic wave propagation, specifically, the ultrasonic wave provided by ultrasonic wave generating device 103 is transmitted into medium solution 50, and is propagated into container 20 through medium solution 50.

[0033] Please refer to Figures 1 to 2As shown, in an embodiment of the present application, the test solution 30 is arranged in the container 20. Among them, the liquid level of the test solution 30 in the container 20 is higher than the liquid level of the medium solution 50 in the ultrasonic device 10, so as to avoid the movement of the container 20 in the ultrasonic device 10. The test solution 30 is, for example, pure water and the like. The pure water is, for example, first-grade water, second-grade water or third-grade water and the like. In this embodiment, the test solution 30 is, for example, first-grade water. The conductivity of the first-grade water at 25℃ is, for example, less than or equal to 0.01 mS / m. The soluble silicon content in the first-grade water is, for example, less than or equal to 0.01 mg / L. The absorbance of the first-grade water is, for example, less than or equal to 0.001. The absorbance of the first-grade water is, for example, tested under the condition of 254 nm and 1 cm optical path. Since the test solution 30 is in direct contact with the electrode to be tested 40, by taking the first-grade water as the test solution 30, the impurities in the test solution 30 are avoided to affect the ultrasonic wave stripping catalyst layer 402 and the substrate 401 of the ultrasonic device 10, and the accuracy of the test result is improved.

[0034] Please refer to Figure 1 As shown, in an embodiment of the present application, the electrode to be tested 40 is soaked in the test solution 30. Among them, the shape of the electrode to be tested 40 is, for example, polygon, circle or ellipse. In this embodiment, the electrode to be tested 40 is, for example, rectangular. The length of the electrode to be tested 40 is, for example, 30 mm-60 mm. The width of the electrode to be tested 40 is, for example, 20 mm-50 mm. The dimensional error of the electrode to be tested 40 is, for example, less than 0.5%. The surface of the electrode to be tested 40 should be flat, and the edge thereof should be free of burrs, sawteeth or sharp protrusions and the like. Moreover, in this embodiment, the number of the electrode to be tested 40 is, for example, multiple. The multiple electrodes to be tested 40 come from the same hydrogen production electrolytic cell electrode. Specifically, the same electrolytic water hydrogen production electrode is cut to obtain multiple electrodes to be tested 40 of the same size. The multiple electrodes to be tested 40 are sequentially put into the container 20 for ultrasonic testing to obtain multiple ultrasonic peeling rates. The multiple ultrasonic peeling rates are averaged to obtain an average ultrasonic peeling rate. The performance of the hydrogen production electrolytic cell electrode is evaluated based on the average ultrasonic peeling rate. Thus, the measurement error can be reduced, the reliability and accuracy of the measurement result are improved, and the performance of the entire hydrogen production electrolytic cell electrode can be accurately evaluated. Further, if the electrode to be tested 40 needs to be activated, the electrode to be tested 40 needs to be activated before being soaked in the test solution 30. Specifically, the electrode to be tested 40 is installed in the electrolytic cell, a constant current is applied to the electrode to be tested 40, the voltage value of the electrode to be tested 40 is observed and recorded every 5 min, for example, until the voltage value of the electrode to be tested 40 tends to be stable, and the activation is completed.

[0035] Please refer to Figures 1 to 2As shown, in an embodiment of the present application, the electrode to be measured 40 comprises, for example, a substrate 401 and a catalyst layer 402, etc. The catalyst layer 402 is arranged on the surface of the substrate 401. In this embodiment, the medium solution 50 transmits ultrasonic waves into the test solution 30, due to cavitation, the molecules of the test solution 30 are excited to collide and generate strong impact force, which impacts the catalyst layer 402, so that the catalyst layer 402 is peeled off from the substrate 401. If the catalyst layer 402 and the substrate 401 are not firmly combined, the catalyst layer 402 is easily separated from the substrate 401 due to ultrasonic waves, resulting in a decrease in the quality of the electrode to be measured 40 after ultrasonic treatment. If the catalyst layer 402 and the substrate 401 are firmly combined, the catalyst layer 402 will not be separated from the substrate 401 due to ultrasonic waves, and the quality of the electrode to be measured 40 after ultrasonic treatment will not change substantially. The ultrasonic device 10 ultrasonically processes the electrode to be measured 40 for, for example, 30-120 minutes. Therefore, the ultrasonic peeling rate is calculated by measuring the quality of the electrode to be measured 40 before and after ultrasonic treatment, and the combination performance of the catalyst layer 402 and the substrate 401 can be evaluated based on the ultrasonic peeling rate. Specifically, the ultrasonic peeling rate can be calculated according to the following formula.

[0036]

[0037] Wherein, M0 is the initial mass of the electrode to be measured 40, in milligrams, M1 is the mass of the electrode to be measured 40 after ultrasonic treatment, in milligrams, M% is the average ultrasonic peeling rate. For n electrodes to be measured 40 from the same hydrogen production electrolytic cell electrode, the measurement and calculation are performed in turn, n ultrasonic peeling rate values are obtained, and the average ultrasonic peeling rate M% is obtained by averaging the n ultrasonic peeling rate values. Based on this, the overall performance of the hydrogen production electrolytic cell electrode is evaluated, thereby improving the reliability and accuracy of the measurement results.

[0038] Please refer to Figure 1 As shown, in an embodiment of the present application, the ultrasonic device 10 further comprises a clamping device 70, one end of the clamping device 70 is connected to the inner wall of the ultrasonic device 10, and the other end clamps the container 20. In this embodiment, the container 20 and the electrode to be measured 40 are always located at the center of the ultrasonic device 10 through the clamping device 70, which can ensure the consistency of the positions of the container 20 and the electrode to be measured 40 during the test, avoid the influence of different ultrasonic intensities at different positions in the ultrasonic device 10 on the test results, and thereby improve the reliability of the test results.

[0039] In order to further illustrate the test system of the hydrogen production electrolytic cell electrode provided by the present application, the test steps of the hydrogen production electrolytic cell electrode are specifically described below.

[0040] Please refer to Figure 1As shown, the electrode for hydrogen production electrolytic cell is cut to obtain three to-be-tested electrodes 40. The shape of the to-be-tested electrode 40 is rectangular, the length of the to-be-tested electrode 40 is 50 mm, and the width of the to-be-tested electrode 40 is 40 mm. The to-be-tested electrode 40 is washed with pure water and ethanol in sequence, and then vacuum dried in an oven at 70 DEG C and a vacuum degree of not more than 200 Pa, and the drying time is greater than or equal to 2 hours. After drying, the to-be-tested electrode 40 is weighed to obtain M0.

[0041] As shown in Figure 1 As shown, the container 20 is placed in the center of the ultrasonic device 10, 200 mL of the test solution 30 is added into the container 20, then one to-be-tested electrode 40 is placed horizontally in the test solution 30, and the container 20 is fixed by using the clamping device 70. Then, the medium solution 50 is added into the ultrasonic device 10, and the height of the medium solution 50 in the ultrasonic device 10 is 50 mm. The ultrasonic device 10 is started, and the temperature controller 104 controls the temperature of the medium solution 50 and the test solution 30 to be 30 DEG C, and the to-be-tested electrode 40 is ultrasonically treated for 60 minutes.

[0042] As shown in Figure 1 As shown, after ultrasonic treatment, the to-be-tested electrode 40 is taken out, washed with pure water and ethanol in sequence, and then vacuum dried in an oven at 70 DEG C and a vacuum degree of not more than 200 Pa, and the drying time is greater than or equal to 2 hours. After drying, the to-be-tested electrode 40 is weighed to obtain M1. The other two to-be-tested electrodes 40 are placed in the test solution 30 in sequence, and the above steps are repeated. According to M0 and M1, the average ultrasonic peeling rate M% is calculated.

[0043] In summary, the utility model provides a kind of electrode for hydrogen production electrolytic cell test system, by ultrasonic equipment, the combination property of substrate and catalyst layer in electrode can be accurately tested, to accurately evaluate the stability of catalyst layer on substrate in electrode for hydrogen production electrolytic cell. Moreover, the test system provided by the utility model can ensure the stability of test conditions in the test process by controlling the temperature of test solution and the position of container and other parameters, to improve the accuracy, reliability and consistency of test results.

[0044] References to "one embodiment", "an embodiment", or "the embodiments" throughout the specification, mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application, and is not necessarily included in all embodiments. Thus, the various appearances of the phrases "in one embodiment", "in an embodiment", or "in a specific embodiment" in various places throughout this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It will be appreciated that, except where otherwise indicated, the application described herein is not limited in its application to the details of construction or the arrangement of components set forth in the description or illustrated in the drawings. Changes can be made in the application as described herein, and in its application, without departing from the scope of the application as recited in the claims.

[0045] The above description is only preferred embodiments of the present application and the explanation of the technical principles applied, and those skilled in the art should understand that the application range of the application involved in the present application is not limited to the technical solutions formed by the specific combinations of the technical features described above, and should also cover other technical solutions formed by any combinations of the technical features described above or their equivalent features without departing from the application concept, for example, the technical solutions formed by the mutual replacement of the features described above and the technical features disclosed in the present application (but not limited to) with similar functions. In addition to the technical features described in the specification, the remaining technical features are known to those skilled in the art, and in order to highlight the innovative features of the present application, the remaining technical features will not be described here.

Claims

1. A test system for electrodes for hydrogen production electrolyzers, characterized by, At least comprising: An ultrasonic device comprising a housing, an ultrasonic wave generating device and a temperature controller; A container arranged in the ultrasonic device, and a test solution arranged in the container, a medium solution arranged between the container and the inner wall of the ultrasonic device, and the container placed in the medium solution; and A to-be-tested electrode immersed in the test solution, and the to-be-tested electrode comprising a substrate and a catalyst layer arranged on the surface of the substrate.

2. The test system of claim 1, wherein, The test system further comprises a clamping device, one end of the clamping device connected with the inner wall of the ultrasonic device, and the other end clamping the container.

3. The test system of claim 1, wherein, The ultrasonic frequency of the ultrasonic device is 20KHz-60KHz, and the ultrasonic power is 200W-500W.

4. The test system of claim 1, wherein, The liquid level of the test solution in the container is higher than the liquid level of the medium solution in the ultrasonic device.

5. The test system of claim 1, wherein, The temperature of the test solution is 25℃-35℃, and the ultrasonic treatment time of the to-be-tested electrode by the ultrasonic device is 30min-120min.

6. The test system of claim 1, wherein, The test system further comprises a top cover arranged on the container.

7. The test system of claim 1, wherein, The shape of the to-be-tested electrode is polygon, circle or ellipse.

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