Electro-catalysis hydrogen evolution performance testing device

Abstract

The invention relates to the related technical field of electrochemical testing, and discloses an electro-catalysis hydrogen evolution performance testing device which comprises a reaction box body, a detection box body is arranged on the side face of the reaction box body, a connecting pipe is fixedly connected between the reaction box body and the detection box body, and a gear is rotationally connected to the inner wall of the detection box body; the gear is fixedly connected with a light emitter, the bottom of the gear is in meshed connection with a rack, the side face of the rack is fixedly connected with a first spring damping device, the inner wall of the top of the detection box body is fixedly connected with a detection plate, and an infrared detection plate and a light receiving device are arranged in the detection plate; vent holes are formed in the device shell, and vent grooves are formed in the inner side face of the device shell; hydrogen pushes the rack to move in the detection box body, the irradiation angle of the light emitter on the gear is changed, the hydrogen concentration is detected through the infrared detection plate, the gas generation amount is detected through the light receiving device, and the purpose of detecting the hydrogen evolution performance of the device is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrochemistry testing, and specifically to a device for testing the electrocatalytic hydrogen evolution performance. Background Art

[0002] Climate change and energy crises caused by the excessive consumption of fossil fuels have become worldwide problems. As a green energy source, hydrogen is considered an alternative to fossil fuels in the future. Using renewable solar energy to drive electrochemical water splitting is a green way to produce hydrogen fuel. The electrocatalytic hydrogen evolution reaction is the cathodic process of hydrogen evolution corrosion on the surface of a metal electrode and is an important process for hydrogen production in a reversible hydrogen fuel cell. Simply put, it refers to the production of hydrogen through electrochemical methods under the action of a catalyst.

[0003] In the performance test of an electrocatalytic hydrogen evolution device, it is necessary to collect the amount of hydrogen generated to confirm the hydrogen evolution ability. Usually, the drainage method is used to collect hydrogen, and the amount of hydrogen is determined by observing the water scale on the gas collection bottle. However, the accuracy of the gas collection bottle is limited, and the observer needs to observe and record with the eyes level with the water surface, which not only increases the labor of the experimenter but also may introduce errors due to human factors. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a device for testing the electrocatalytic hydrogen evolution performance to solve the problems existing in the above-mentioned background art.

[0005] The present invention provides the following technical solution: A device for testing the electrocatalytic hydrogen evolution performance, including a reaction box body, a detection box body is arranged on the side of the reaction box body, a connecting pipe is fixedly connected between the reaction box body and the detection box body, a gear is rotatably connected to the inner wall of the detection box body, a light emitter is fixedly connected to the gear, a rack is meshed and connected to the bottom of the gear, a first spring damping device is fixedly connected to the side of the rack, a detection plate is fixedly connected to the top inner wall of the detection box body, an infrared detection plate and a light receiving device are arranged inside the detection plate, the connecting pipe includes a device housing, a ventilation hole is opened on the device housing, and a ventilation groove is opened on the inner side surface of the device housing;

[0006] During use, the hydrogen generated inside the reaction box body moves from inside the connecting pipe to the detection box body, accumulates continuously in the detection box body and presses the first spring damping device outward, causing the first spring damping device to drive the rack to move outward. The rack drives the gear to rotate, causing the light emitter fixedly connected to the gear to rotate, changing the angle at which the light emitter irradiates on the detection plate. The hydrogen concentration is detected by the infrared detection plate, and the gas generation amount is detected by the light receiving device, achieving the purpose of detecting the hydrogen evolution performance of the device.

[0007] Further, an anode rod and a cathode rod are arranged inside the reaction chamber, and a power supply is arranged outside the reaction chamber. The other ends of the anode rod and the cathode rod are fixedly connected to the external power supply, and the internal electrolyte reaction chamber is powered by the power supply.

[0008] Further, a partition is fixedly connected to the center of the reaction chamber, and a proton exchange membrane is fixedly connected to the bottom of the partition. The proton exchange membrane can separate the cations and anions in the internal electrolyte of the reaction chamber. The partition and the proton exchange membrane are used to divide the internal area of the reaction chamber into a hydrogen evolution area and an oxygen evolution area.

[0009] Further, a first collection bottle is fixedly connected to the outer side surface of the reaction chamber, and a second collection bottle is fixedly connected to the outer side surface of the detection chamber. A collection groove is formed inside the detection chamber, and the detection chamber communicates with the second collection bottle through the collection groove.

[0010] Further, a side baffle is arranged at the center of the ventilation hole. A second spring damping device is fixedly connected to the side surface of the side baffle, and a fixing plate is fixedly connected to the side surface of the second spring damping device. The ventilation groove is formed between the fixing plate and the device housing.

[0011] Further, the detection board includes a housing board. A support block and a reflecting lens are fixedly connected to the inner wall of the housing board. A connecting plate is fixedly connected to the outer end surface of the support block. The infrared detection board is arranged inside the support block, and the light receiving device is arranged on the top of the reflecting lens.

[0012] Further, the included angle between the connecting plate and the housing board is 45 degrees. The reflecting lens and the connecting plate are placed in parallel. A multilayer interference film is arranged on the connecting plate, which can absorb transmitted infrared light and reflect light of other wavelengths.

[0013] Further, two-color light emitters are arranged on the light emitter, one is an infrared light emitter, and the other is a violet or blue light emitter. The wavelength difference between the violet or blue light and the infrared light is relatively obvious and is not likely to affect the detection result.

[0014] During use, hydrogen and oxygen are generated inside the reaction chamber, and the proton exchange membrane is used to separate the hydrogen evolution region and the oxygen evolution region. The hydrogen generated in the hydrogen evolution region enters the connecting pipe and then enters the ventilation groove through the ventilation hole opened on the device housing. Subsequently, it enters the detection chamber through the ventilation groove. The gas generation process is slow at first and then accelerates until it stabilizes. At the beginning, the gas generation is slow and enters through the ventilation hole. The gas generation speed gradually increases. Part of the gas still passes through the ventilation hole, and the other part accumulates at the side baffle until it pushes the side baffle and the second spring damping device to move towards the fixed plate. At this time, hydrogen passes through the ventilation grooves opened at the upper and lower parts of the device housing. On the one hand, the airtightness inside the reaction chamber can be detected through the side baffle. On the other hand, when the gas passes through the ventilation groove, the gas can be gathered on the same horizontal plane, improving the accuracy of the subsequent gas concentration detection result.

[0015] During use, the hydrogen generated inside the reaction chamber moves from inside the connecting pipe to the detection chamber, accumulates continuously in the detection chamber and presses the first spring damping device outward, causing the first spring damping device to drive the rack to move outward. The rack drives the gear to rotate, causing the light emitter fixedly connected to the gear to rotate, changing the angle at which the light emitter irradiates the connecting plate. At the same time, there are two types of light emitters on the light emitter, one is an infrared light emitter, and the other is a violet or blue light emitter. The infrared light directly passes through the connecting plate and irradiates the infrared detection plate, and the violet or blue light irradiates the connecting plate and is reflected. The angle between the connecting plate and the outer shell plate is 45 degrees, causing the violet or blue light to be changed to a horizontal direction and irradiate the reflecting mirror, and then reflected by the reflecting mirror to be irradiated vertically onto the light receiving device. The infrared detection plate detects the wavelength of the infrared light irradiated on it, and by comparing it with the infrared light emitted by the infrared light emitter on the light emitter, the intensity of the absorbed infrared light is obtained. Through professional calculation, the concentration of hydrogen entering the detection chamber from the connecting pipe is obtained. The light receiving device is used to detect the deflection angle of the light emitter, and the deflection angle is magnified optically to obtain the movement distance of the first spring damping device and the rack on the detection chamber. By counting the movement distance and duration of the first spring damping device and the rack on the detection chamber, the total amount of hydrogen generated can be calculated, and thus the hydrogen evolution performance of the detection device can be detected.

[0016] Beneficial effects:

[0017] 1. When the electrocatalytic hydrogen evolution performance test device is in use, the hydrogen generated inside the reaction chamber moves through the connecting pipe to the detection chamber, accumulates continuously in the detection chamber and presses the first spring damping device outward, causing the first spring damping device to drive the rack to move outward. The rack drives the gear to rotate, causing the light emitter fixedly connected to the gear to rotate, changing the angle at which the light emitter irradiates the detection plate. The hydrogen concentration is detected by the infrared detection plate, and the gas generation amount is detected by the light receiving device, achieving the purpose of detecting the hydrogen evolution performance of the detection device. The detection process is safer, and at the same time, the result accuracy is higher. The generated gas can be stored, which is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a schematic diagram of the overall structure of an electrocatalytic hydrogen evolution performance test device proposed by the present invention;

[0019] Figure 2 FIG. is a schematic diagram of the internal structure of the connecting pipe of an electrocatalytic hydrogen evolution performance test device proposed by the present invention;

[0020] Figure 3 FIG. is a schematic diagram of the internal structure of the detection plate of an electrocatalytic hydrogen evolution performance test device proposed by the present invention;

[0021] Figure 4 FIG. is a detection flow chart of an electrocatalytic hydrogen evolution performance test device proposed by the present invention.

[0022] Wherein: 1. Reaction chamber; 2. Power supply; 3. Partition; 4. Proton exchange membrane; 5. Anode rod; 6. Cathode rod; 7. First collection bottle; 8. Connecting pipe; 801. Device housing; 802. Vent hole; 803. Side baffle; 804. Second spring damping device; 805. Ventilation groove; 806. Fixed plate; 9. Detection chamber; 10. Detection plate; 1001. Outer shell plate; 1002. Support block; 1003. Infrared detection plate; 1004. Connection plate; 1005. Reflective lens; 1006. Light receiving device; 11. Gear; 12. Light emitter; 13. Rack; 14. First spring damping device; 15. Collection groove; 16. Second collection bottle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1

[0025] Please refer toFigures 1-4 , an electrocatalytic hydrogen evolution performance testing device, comprising a reaction box body 1, a detection box body 9 is arranged on the side surface of the reaction box body 1, a connecting pipe 8 is fixedly connected between the reaction box body 1 and the detection box body 9, a gear 11 is rotatably connected to the inner wall of the detection box body 9, a light emitter 12 is fixedly connected to the gear 11, a rack 13 is meshed and connected to the bottom of the gear 11, a first spring damping device 14 is fixedly connected to the side surface of the rack 13, a detection plate 10 is fixedly connected to the top inner wall of the detection box body 9, an infrared detection plate 1003 and a light receiving device 1006 are arranged inside the detection plate 10, the connecting pipe 8 comprises a device housing 801, a ventilation hole 802 is opened on the device housing 801, and a ventilation groove 805 is opened on the inner side surface of the device housing 801;

[0026] During use, the hydrogen generated inside the reaction box body 1 moves from inside the connecting pipe 8 into the detection box body 9, accumulates continuously in the detection box body 9 and presses the first spring damping device 14 outward, so that the first spring damping device 14 drives the rack 13 to move outward, the rack 13 drives the gear 11 to rotate, so that the light emitter 12 fixedly connected to the gear 11 rotates, changing the angle at which the light emitter 12 irradiates on the detection plate 10. The hydrogen concentration is detected by the infrared detection plate 1003, and the gas generation amount is detected by the light receiving device 1006, achieving the purpose of detecting the hydrogen evolution performance of the device.

[0027] During use, the hydrogen gas generated inside the reaction chamber 1 moves through the inside of the connecting pipe 8 into the detection chamber 9, accumulates continuously in the detection chamber 9 and presses against the first spring-damping device 14 outwardly, causing the first spring-damping device 14 to drive the rack 13 to move outwardly. The rack 13 drives the gear 11 to rotate, causing the light emitter 12 fixedly connected to the gear 11 to rotate, changing the angle at which the light emitter 12 irradiates the connecting plate 1004. At the same time, there are two types of light emitters on the light emitter 12, one is an infrared light emitter, and the other is a violet or blue light emitter. The infrared light directly passes through the connecting plate 1004 and irradiates the infrared detection plate 1003, while the violet or blue light is reflected when it irradiates the connecting plate 1004. The connecting plate 1004 forms a 45-degree angle with the outer shell plate 1001, causing the violet or blue light to be irradiated horizontally onto the reflecting mirror 1005, and then reflected by the reflecting mirror 1005 to be irradiated vertically onto the light receiving device 1006. The infrared detection plate 1003 detects the wavelength of the infrared light irradiated thereon, and by comparing it with the infrared light emitted by the infrared light emitter on the light emitter 12, the absorption intensity of the infrared light is obtained. Through professional calculations, the concentration of hydrogen gas entering the detection chamber 9 from the connecting pipe 8 is obtained. The light receiving device 1006 is used to detect the deflection angle of the light emitter 12, and the deflection angle is amplified optically to obtain the movement distance of the first spring-damping device 14 and the rack 13 on the detection chamber 9. By counting the movement distance and duration of the first spring-damping device 14 and the rack 13 on the detection chamber 9, the total amount of hydrogen gas generated can be calculated, and thus the hydrogen evolution performance of the detection device can be detected.

[0028] During the calculation, the movement amplitude and time of the first spring-damping device 14 inside the detection chamber 9 are obtained through the light receiver, that is, the distance and time of the first spring-damping device 14 moving in the direction of the second collection bottle 16 are obtained. The connection between the inside of the detection chamber 9 and the second collection bottle 16 is a tapered hole. When the first spring-damping device 14 moves in the direction of the second collection bottle 16, the distance between the vertical section of the first spring-damping device 14 and the tapered hole is the opening size. The first spring-damping device 14 is pushed by the internal gas. The product of the opening size and the opening duration can be regarded as the gas volume passing through during the duration. The linear relationship of the vertical section of the tapered hole can be obtained through pre-measurement. Through the linear relationship, the specific value of the opening of the tapered hole when the first spring-damping device 14 moves to different distances can be calculated. By adding up the gas volumes passing through each time period, the total hydrogen gas generation amount can be known.

[0029] Embodiment 2

[0030] Please refer to Figures 1-4, an anode rod 5 and a cathode rod 6 are arranged inside the reaction box body 1, and a power supply 2 is arranged outside the reaction box body 1. The other ends of the anode rod 5 and the cathode rod 6 are fixedly connected to the external power supply 2, and the internal electrolyte reaction box body 1 is powered by the power supply.

[0031] A partition plate 3 is fixedly connected to the center of the reaction box body 1, and a proton exchange membrane 4 is fixedly connected to the bottom of the partition plate 3. The proton exchange membrane 4 can separate cations and anions in the internal electrolyte of the reaction box body 1. The partition plate 3 and the proton exchange membrane 2 are used to divide the internal area of the reaction box body 1 into a hydrogen evolution area and an oxygen evolution area.

[0032] A first collection bottle 7 is fixedly connected to the outer side surface of the reaction box body 1, a second collection bottle 16 is fixedly connected to the outer side surface of the detection box body 9, a collection groove 15 is opened inside the detection box body 9, and the detection box body 9 communicates with the second collection bottle 16 through the collection groove 15.

[0033] A side baffle 803 is arranged at the center of the ventilation hole 802. A second spring damping device 804 is fixedly connected to the side surface of the side baffle 803. A fixing plate 806 is fixedly connected to the side surface of the second spring damping device 804. A ventilation groove 805 is opened between the fixing plate 806 and the device housing 801.

[0034] The detection plate 10 includes a housing plate 1001. A support block 1002 and a reflection lens 1005 are fixedly connected to the inner wall of the housing plate 1001. A connecting plate 1004 is fixedly connected to the outer end surface of the support block 1002. An infrared detection plate 1003 is arranged inside the support block 1002. A light receiving device 1006 is arranged on the top of the reflection lens 1005.

[0035] The included angle between the connecting plate 1004 and the housing plate 1001 is 45 degrees. The reflection lens 1005 and the connecting plate 1004 are placed in parallel. A multilayer interference film is arranged on the connecting plate 1004, which can absorb transmitted infrared light and reflect light of other wavelengths.

[0036] Two-color light emitters are arranged on the light emitter 12, one is an infrared light emitter, and the other is a violet or blue light emitter. The wavelength difference between the violet or blue light and the infrared light is obvious and it is not easy to affect the detection result.

[0037] During use, hydrogen and oxygen are generated inside the reaction chamber 1, and the proton exchange membrane is used to separate the hydrogen evolution area and the oxygen evolution area. The hydrogen generated in the hydrogen evolution area enters the connecting pipe 8 and then enters the ventilation groove 805 through the ventilation hole 802 opened on the device housing 801. Subsequently, it enters the detection chamber 9 through the ventilation groove 805. The gas generation starts slowly, speeds up gradually, and finally stabilizes. At the beginning, the gas generation is slow and enters through the ventilation hole 802. The gas generation speed gradually increases. Part of the gas still passes through the ventilation hole 802, and the other part accumulates at the side baffle 803 until the side baffle 803 and the second spring damping device 804 are pushed to move towards the fixed plate 806. At this time, hydrogen passes through the ventilation grooves 805 opened above and below the device housing 801. On the one hand, the airtightness inside the reaction chamber 1 can be detected through the side baffle 803. On the other hand, when the gas passes through the ventilation groove 805, the gas can be gathered on the same horizontal plane, improving the accuracy of the subsequent gas concentration detection result.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrocatalytic hydrogen evolution performance testing device, comprising a reaction box (1), characterized in that: A detection box (9) is arranged on the side of the reaction box (1), a connecting pipe (8) is fixedly connected between the reaction box (1) and the detection box (9), a gear (11) is rotatably connected to the inner wall of the detection box (9), a light emitter (12) is fixedly connected to the gear (11), a rack (13) is meshedly connected to the bottom of the gear (11), a spring damping device (14) is fixedly connected to the side of the rack (13), a detection board (10) is fixedly connected to the inner wall of the top of the detection box (9), an infrared detection board (1003) and a light receiving device (1006) are arranged inside the detection board (10), the connecting pipe (8) comprises a device housing (801), a vent hole (802) is provided on the device housing (801), and a vent groove (805) is provided on the inner side of the device housing (801); When in use, hydrogen generated inside the reaction box (1) moves from the inside of the connecting pipe (8) to the detection box (9), and is continuously accumulated in the detection box (9) and presses the first spring damping device (14) outwardly, so that the first spring damping device (14) drives the rack (13) to move outwardly, and the rack (13) drives the gear (11) to rotate, so that the light emitter (12) fixedly connected to the gear (11) rotates, and the angle at which the light emitter (12) irradiates the detection plate (10) is changed, and the hydrogen concentration is detected by the infrared detection plate (1003), and the light receiving device (1006) detects the amount of gas generated, so as to achieve the purpose of detecting the hydrogen evolution performance of the device.

2. The electrocatalytic hydrogen evolution performance testing device according to claim 1, characterized in that: An anode rod (5) and a cathode rod (6) are arranged inside the reaction box (1), and a power source (2) is arranged outside the reaction box (1), and the other ends of the anode rod (5) and the cathode rod (6) are fixedly connected to the external power source (2).

3. The electrocatalytic hydrogen evolution performance testing device according to claim 1, characterized in that: A partition (3) is fixedly connected to the center of the reaction box (1), and a proton exchange membrane (4) is fixedly connected to the bottom of the partition (3). The proton exchange membrane (4) can separate anions and cations in the electrolyte inside the reaction box (1).

4. The electrocatalytic hydrogen evolution performance testing device according to claim 1, characterized in that: A No. 1 collecting bottle (7) is fixedly connected to the outer surface of the reaction box (1), a No. 2 collecting bottle (16) is fixedly connected to the outer surface of the detection box (9), a collecting groove (15) is provided inside the detection box (9), and the detection box (9) is connected to the No. 2 collecting bottle (16) through the collecting groove (15).

5. The electrocatalytic hydrogen evolution performance testing device according to claim 1, characterized in that: A side baffle (803) is provided at the center of the vent hole (802); a No. 2 spring damping device (804) is fixedly connected to the side of the side baffle (803); a fixing plate (806) is fixedly connected to the side of the No. 2 spring damping device (804); and the vent groove (805) is provided between the fixing plate (806) and the device housing (801).

6. The electrocatalytic hydrogen evolution performance testing device according to claim 1, characterized in that: The detection board (10) comprises an outer shell plate (1001), a support block (1002) and a reflective lens (1005) are fixedly connected to the inner wall of the outer shell plate (1001), a connection plate (1004) is fixedly connected to the outer end surface of the support block (1002), the infrared detection board (1003) is arranged inside the support block (1002), and the light receiving device (1006) is arranged on the top of the reflective lens (1005).

7. The electrocatalytic hydrogen evolution performance testing device according to claim 6, characterized in that: The angle between the connecting plate (1004) and the outer shell plate (1001) is forty-five degrees. The reflective lens (1005) and the connecting plate (1004) are placed in parallel. A multi-layer interference film is arranged on the connecting plate (1004) to absorb transmitted infrared light and reflect light of other wavelengths.

8. The electrocatalytic hydrogen evolution performance testing device according to claim 1, characterized in that: The light emitter (12) is provided with light emitters of two colors, an infrared light emitter and a purple light or blue light emitter.

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