CN114755282B - Novel membrane electrode test device of pure water electrolysis catalyst - Google Patents
Novel membrane electrode test device of pure water electrolysis catalyst Download PDFInfo
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- CN114755282B CN114755282B CN202210380049.9A CN202210380049A CN114755282B CN 114755282 B CN114755282 B CN 114755282B CN 202210380049 A CN202210380049 A CN 202210380049A CN 114755282 B CN114755282 B CN 114755282B
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- membrane electrode
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- power supply
- electrode
- water electrolysis
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- 239000003054 catalyst Substances 0.000 title claims abstract description 74
- 238000012360 testing method Methods 0.000 title claims abstract description 55
- 239000012528 membrane Substances 0.000 title claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 27
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000001257 hydrogen Substances 0.000 claims abstract description 16
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 16
- 239000011810 insulating material Substances 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 229910001260 Pt alloy Inorganic materials 0.000 claims description 4
- VRIVJOXICYMTAG-IYEMJOQQSA-L iron(ii) gluconate Chemical compound [Fe+2].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O VRIVJOXICYMTAG-IYEMJOQQSA-L 0.000 claims description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 3
- 238000011160 research Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 6
- 238000012512 characterization method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/4163—Systems checking the operation of, or calibrating, the measuring apparatus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Abstract
The invention relates to a novel membrane electrode testing device of a pure water electrolysis catalyst, which comprises a water electrolysis hydrogen production device and a multi-kinetic energy power supply, wherein an electrode plate, a sealing frame and a membrane electrode are arranged in a water tank of the water electrolysis hydrogen production device, and two ends of the multi-functional power supply are electrically connected with the electrode plate; according to the invention, the actual working condition of the catalyst can be directly recorded through the device, the actual application of the catalyst with physical signs is verified, and the efficiency of the catalyst from theoretical research to actual application is improved; the invention replaces the traditional electrolytic testing device, omits an electrolytic water tank, a complicated connected gas path, a complicated connected pipeline and excessive electronic components, and simplifies the device; the testing device only needs to replace the membrane electrode without disassembling any component, except that the electrode is used as a conductive carrier, other materials are all insulating materials, the testing device is prevented from having electricity leakage, and the testing safety is improved.
Description
Technical Field
The invention relates to the technical field of membrane electrode testing, in particular to a novel membrane electrode testing device of a pure water electrolysis catalyst.
Background
The Proton Exchange Membrane Water Electrolysis (PEMWE) hydrogen production technology has the advantages of high power density, high conversion efficiency, good hydrogen quality and the like, has the technical characteristics of quick start and wide power adjustment, can realize high fit with the fluctuation of renewable energy sources such as wind, light, water and the like, and is a strategic technology for preparing high-purity green hydrogen and coping with carbon neutralization. However, because noble metals are adopted as catalysts, the application cost of the catalyst is high, and the search for supported, alloy-type and non-noble metal catalysts is a hot spot in the research.
According to the conventional catalyst testing method, an electrochemical workstation, an electron microscope (SEM) and the like are adopted to characterize the catalyst, a high-efficiency catalyst is obtained by controlling the particle size range and the high specific surface area, the catalyst is screened in the mode, then the electrochemical workstation is tested, the starting voltage of the catalyst is tested by utilizing the theoretical overpotential, the catalyst stays in the research of the catalyst, the performance evaluation of the actual commercial catalyst lacks pertinency and cannot be directly applied in commerce, the theoretical data is good, but the practical application membrane electrode testing effect is poor, so that a novel commercial application catalyst testing device is designed aiming at the defects of the electrochemical workstation, the catalyst is directly applied to test, and the possibility of commercial application is verified.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art and providing a novel membrane electrode testing device for a pure water electrolysis catalyst, and solves the problems that the characterization of the catalyst mainly comprises the testing of specific surface area, granularity and overpotential in the prior art, and the phenomenon that the actual application effect of the testing on the catalyst is inconsistent due to the lack of integral testing evaluation on oxygen evolution and hydrogen evolution catalysts is unable to meet the requirement of the actual application.
The invention is realized by adopting the following technical scheme:
the utility model provides a novel membrane electrode testing arrangement of pure water electrolysis catalyst, includes water electrolysis hydrogen plant and multi-functional power, water tank inside of water electrolysis hydrogen plant is provided with electrode plate, sealing frame and membrane electrode, multi-functional power both ends with the electrode plate electricity is connected.
Preferably: the two electrode plates are movably inserted into the water electrolysis hydrogen production device, the sealing frames are respectively and movably arranged on the inner sides of the two electrode plates, and the membrane electrodes are movably inserted in the middle of the two sealing frames.
Preferably: the sealing frame is characterized in that a through hole is formed in the center of the sealing frame, a plurality of round small holes are formed in the periphery of the round hole through hole, and the round small holes are connected with the through hole through a slow flow belt.
Preferably: and the through hole is internally provided with a current collector with the same size and thickness as the through hole.
Preferably: the cathode and anode surfaces of the membrane electrode are respectively coated with catalysts, and the multifunctional power supply comprises a controller and a conversion control power supply.
Preferably: the membrane electrode cathode adopts Pt alloy catalysts and Pt/C catalysts with different Co contents; the anode catalyst adopts an Ir-Pt catalyst and an IrOx catalyst.
Preferably: the particle size ranges of the catalyst are 10nm-50nm, 5nm-6nm and 100nm-150nm respectively.
Preferably: the water tank is made of insulating materials, and clamping grooves are formed in two ends of the water tank.
The testing method of the novel pure water electrolysis catalyst membrane electrode testing device comprises the steps of fixing two sides of a cathode and an anode of a membrane electrode to be tested by utilizing sealing frames, placing a current collector in a through hole of the sealing frames, inserting the membrane electrode between the two sealing frames, placing the two sealing frames into a water tank, and connecting an electrode plate with a multifunctional power supply by utilizing a wire to form an electrolysis testing chamber;
pure water is filled in the anode cavity of the electrode plate, the whole membrane electrode is not filled, an input current is set to be connected with a multifunctional power supply, the multifunctional power supply is connected with a computer, the computer displays the continuous operation voltage change condition, test data are recorded, different current densities are continuously set by utilizing the multifunctional power supply, the electrolysis voltage is tested, and the service life of the membrane electrode is tested, so that the possibility of whether the physical surface of the catalyst in the membrane electrode can be practically or commercially applied is verified.
Compared with the prior art, the invention has the following beneficial technical effects:
according to the invention, the actual working condition of the catalyst can be directly recorded through the device, the actual application of the catalyst with physical signs is verified, and the efficiency of the catalyst from theoretical research to actual application is improved; the invention replaces the traditional electrolytic testing device, omits an electrolytic water tank, a complicated connected gas path, a complicated connected pipeline and excessive electronic components, and simplifies the device; the testing device only needs to replace the membrane electrode without disassembling any component, except that the electrode is used as a conductive carrier, other materials are all insulating materials, the testing device is prevented from having electricity leakage, and the testing safety is improved.
Drawings
The invention will be further described with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the interior of the water tank of the present invention;
FIG. 3 is a first test structure diagram according to the first embodiment of the present invention;
FIG. 4 is a diagram showing a second test structure according to the first embodiment of the present invention;
fig. 5 is a schematic view of a seal frame structure of the present invention.
Description of the reference numerals
1. An electrode plate; 2. a sealing frame; 3. a membrane electrode; 4. a water tank; 5. a hydrogen production device by water electrolysis; 6. a multifunctional power supply; 7. a through hole; 8. a slow flow belt.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other. In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Embodiment one:
as shown in fig. 1, 2 and 5: the novel membrane electrode 3 testing device of the pure water electrolysis catalyst comprises a water electrolysis hydrogen production device 5 and a multifunctional power supply 6, wherein an electrode plate 1, a sealing frame 2 and the membrane electrode 3 are arranged inside a water tank 4 of the water electrolysis hydrogen production device 5, and two ends of the multifunctional power supply 6 are electrically connected with the electrode plate 1; the two electrode plates 1 are movably inserted into the water electrolysis hydrogen production device 5, the sealing frames 2 are respectively and movably arranged on the inner sides of the two electrode plates 1, and the membrane electrode 3 is movably inserted between the two sealing frames 2; a through hole 7 is formed in the center of the sealing frame 2, a plurality of round small holes are formed around the round hole 7, and the round small holes are connected with the through hole 7 through a slow flow belt 8; the through holes 7 are internally provided with current collectors with the same size and thickness as the through holes 7, the cathode and anode surfaces of the membrane electrode 3 are respectively coated with catalysts, and the multifunctional power supply 6 comprises a controller and a conversion control power supply; the cathode of the membrane electrode 3 adopts Pt alloy catalysts with different Co contents and Pt/C catalysts; the anode catalyst adopts an Ir-Pt catalyst and an IrOx catalyst; the particle size ranges of the catalyst are respectively 10nm-50nm, 5nm-6nm and 100nm-150nm; the water tank 4 is made of insulating materials, and clamping grooves are formed in two ends of the water tank 4.
A testing method of a novel membrane electrode 3 testing device of a pure water electrolysis catalyst,
the method comprises the steps of (1) electrolyzing a membrane electrode 3 by pure water to be tested, fixing two sides of a cathode and an anode of the membrane electrode 3 by using sealing frames 2, placing a current collector in a through hole 7 of the sealing frames 2, inserting the membrane electrode 3 between the two sealing frames 2, placing the two sealing frames into clamping grooves at two ends of a water tank 4, and connecting an electrode plate 1 with a multifunctional power supply 6 by using a wire to form an electrolysis test chamber; the current collector is in contact with the membrane electrode 3, and transmits electrode voltage to the membrane electrode 3 so as to balance the surface voltage of the membrane electrode 3;
pure water is filled in the anode cavity of the electrode plate 1, the whole membrane electrode 3 is not filled, and partial pure water enters the current collector in the through hole 7 through the slow flow belt 8 by the circular small holes; the input current is set to be connected with the multifunctional power supply 6, the multifunctional power supply 6 is connected with a computer through signals, the computer displays the continuous operation voltage change condition, test data are recorded, different current densities are continuously set by utilizing the multifunctional power supply 6, the electrolysis voltage is tested, and the life test of the membrane electrode 3 is carried out, so that the possibility of whether the physical characterization catalyst can be practically or commercially applied in the membrane electrode 3 is verified.
Test one:
the current of the conversion controller is 1A/cm 2 When the membrane electrode 3 is used for preparing Pt alloy catalysts with different Co contents at the cathode, an Ir-Pt catalyst is used as an anode catalyst, the catalyst names are catalyst 1 and catalyst 2, the particle size ranges are all 100nm-150nm, the test overpotential is 90mv and 50mv respectively, and the test results are shown in the following figure 3;
according to the test result, the catalyst 2 with large overpotential is reversely operated with lower operation voltage, the operation time is long, the voltage is suddenly reduced after the catalyst is operated for 40 hours, at the moment, the membrane electrode 3 breaks down to cause short circuit in a small internal range, the voltage is reduced, the catalyst with smaller overpotential is not necessarily suitable for practical application, the practical electrolysis test requirement is provided for the commercial application of the catalyst, the device can realize multi-channel simultaneous test and parallel test, thus the test data of the same working environment can be improved, the external errors caused by different power supplies are reduced, and the test accuracy and reliability are greatly improved.
And II, testing:
the current of the conversion controller is 1A/cm 2 When the anode is an IrOx catalyst, the particle size ranges are respectively 10nm-50nm and 5nm-6nm, the overpotential is respectively 100mv and 60mv, the catalysts are named as catalyst 3 and catalyst 4, and the test result is shown in figure 4;
according to the test results, the catalyst 4 with smaller particle size range and smaller overpotential is not as small as the visual electrolysis voltage of the catalyst, the apparent voltage fluctuation range of the catalyst 4 is larger, the membrane electrode 3 is greatly impacted and damaged at the beginning of electrolysis, and a certain electric shock damage is caused, so that the potential danger of the later electrolysis operation is caused, and the commercial application of the catalyst is not facilitated.
Therefore, according to the time operation condition of the set of testing device, the commercial application of the catalyst can be intuitively reflected, and the requirement of the catalyst application can not be met only by means of a physical characterization method, so that the device is required to carry out actual testing, the actual electrolysis operation condition can be directly fed back, and reliable assurance is provided for screening the catalyst.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (1)
1. The testing method of the membrane electrode testing device of the pure water electrolysis catalyst is characterized by comprising the following steps of:
preparing a pure water electrolysis membrane electrode to be tested, fixing the two sides of a cathode and an anode of the membrane electrode by using sealing frames, placing a current collector in a through hole of the sealing frames, inserting the membrane electrode between the two sealing frames, placing the sealing frames into a water tank, and connecting an electrode plate with a multifunctional power supply by using a lead to form an electrolysis test chamber;
adding pure water into the anode cavity of the electrode plate, setting an input current to be connected with a multifunctional power supply, connecting a signal with a computer by the multifunctional power supply, displaying the continuous operation voltage change condition by the computer, recording test data, continuously setting different current densities by utilizing the multifunctional power supply, testing the electrolysis voltage of the electrode plate, and testing the service life of the electrode plate;
the membrane electrode testing device comprises a water electrolysis hydrogen production device and a multifunctional power supply, wherein an electrode plate, a sealing frame and a membrane electrode are arranged in a water tank of the water electrolysis hydrogen production device, and two ends of the multifunctional power supply are electrically connected with the electrode plate;
the two electrode plates are movably inserted into the water electrolysis hydrogen production device, the sealing frames are respectively and movably arranged on the inner sides of the two electrode plates, and the membrane electrode is movably inserted between the two sealing frames;
the center of the sealing frame is provided with a through hole, a plurality of round small holes are arranged around the through hole, and the round small holes are connected with the through hole through a slow flow belt;
the through holes are internally provided with current collectors with the same size and thickness as the through holes;
the cathode and anode surfaces of the membrane electrode are respectively coated with catalysts, and the multifunctional power supply comprises a controller and a conversion control power supply;
the membrane electrode cathode adopts Pt alloy catalysts and Pt/C catalysts with different Co contents; the membrane electrode anode adopts an Ir-Pt catalyst and an IrOx catalyst;
the water tank is made of insulating materials, and clamping grooves are formed in two ends of the water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210380049.9A CN114755282B (en) | 2022-04-12 | 2022-04-12 | Novel membrane electrode test device of pure water electrolysis catalyst |
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| CN202210380049.9A CN114755282B (en) | 2022-04-12 | 2022-04-12 | Novel membrane electrode test device of pure water electrolysis catalyst |
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| CN114755282A CN114755282A (en) | 2022-07-15 |
| CN114755282B true CN114755282B (en) | 2024-01-30 |
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