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Hydrogen evolution reaction catalyst, and preparation method and applications thereof

An oxygen evolution reaction and catalyst technology, which is applied in the field of electrochemical catalysis, can solve the problems of high cost and achieve the effects of low cost, reduced production cost, and high oxygen evolution catalytic activity

Inactive Publication Date: 2019-07-26
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, provide an acidic oxygen evolution reaction catalyst and its preparation method and application, to solve the technical problem of high cost caused by the use of precious metals in the existing oxygen evolution reaction catalyst

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  • Hydrogen evolution reaction catalyst, and preparation method and applications thereof
  • Hydrogen evolution reaction catalyst, and preparation method and applications thereof
  • Hydrogen evolution reaction catalyst, and preparation method and applications thereof

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Experimental program
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Effect test

Embodiment 11

[0060] This embodiment provides an acidic oxygen evolution reaction catalyst and a preparation method thereof. The acidic oxygen evolution reaction catalyst is pyrochlore-structured Y 2 Ru 2 o 7 .

[0061] The preparation method of the acidic oxygen evolution reaction catalyst comprises the steps:

[0062] S11. Set Y(NO 3 ) 3 ·6H 2 O was dissolved in deionized water to obtain the first solution with a concentration of 0.005 mol L -1 ;

[0063] S12. RuCl 3 Add the solution described in S11 to obtain a second solution, RuCl 3 The concentration is 0.005mol L -1 , stirring for 10 minutes;

[0064] S13. Dissolve citric acid in the second solution of step S12, stir for 30 minutes, the concentration of citric acid is 0.022mol L -1 ; Adjust the pH of the mixed solution to 8.5 with ammonia water;

[0065] S14. Heat the solvent of S13 in a water bath at 80°C, evaporate the solvent to dryness, put the obtained product in a vacuum drying oven, and dry at 120°C for 10 hours; ...

Embodiment 12

[0068] This embodiment provides an acidic oxygen evolution reaction catalyst and a preparation method thereof. The acidic oxygen evolution reaction catalyst is pyrochlore-structured Y 2 Ru 2 o 7 .

[0069] The preparation method of the acidic oxygen evolution reaction catalyst comprises the steps:

[0070] S11. Set Y(NO 3 ) 3 ·6H 2O was dissolved in deionized water to obtain the first solution with a concentration of 0.01 mol L -1 ;

[0071] S12. RuCl 3 Add the solution described in S11 to obtain a second solution, RuCl 3 The concentration is 0.01mol L -1 , stirring for 10 minutes;

[0072] S13. Dissolve citric acid in the second solution of step S12, stir for 30 minutes, the concentration of citric acid is 0.05mol L -1 ; Adjust the pH of the mixed solution to 9 with ammonia water;

[0073] S14. Heat the solvent of S13 in a water bath at 85°C, evaporate the solvent to dryness, put the obtained product in a vacuum drying oven, and dry at 120°C for 10 hours;

[007...

Embodiment 13

[0076] This embodiment provides an acidic oxygen evolution reaction catalyst and a preparation method thereof. The acidic oxygen evolution reaction catalyst is pyrochlore-structured Y 2 Ru 2 o 7 .

[0077] The preparation method of the acidic oxygen evolution reaction catalyst comprises the steps:

[0078] S11. Set Y(NO 3 ) 3 ·6H 2 O was dissolved in deionized water to obtain the first solution with a concentration of 0.02 mol L -1 ;

[0079] S12. RuCl 3 Add the solution described in S11 to obtain a second solution, RuCl 3 The concentration is 0.02mol L -1 , stirring for 10 minutes;

[0080] S13. Dissolve citric acid in the second solution of step S12, stir for 30 minutes, the concentration of citric acid is 0.1mol L -1 ; Adjust the pH of the mixed solution to 9 with ammonia water;

[0081] S14. Heat the solvent of S13 in a water bath at 85°C, evaporate the solvent to dryness, put the obtained product in a vacuum drying oven, and dry at 120°C for 10 hours;

[008...

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Abstract

The invention provides a hydrogen evolution reaction catalyst, and a preparation method, and applications thereof. The hydrogen evolution reaction catalyst is Y2Ru2O7. The preparation method comprisesfollowing steps: a mixed solution of a Y salt and a Ru salt is prepared, sol-gel method or coprecipitation is adopted to prepare a Y2Ru2O7 precursor, and the Y2Ru2O7 precursor is subjected to calcining, and the like. The acidic hydrogen evolution reaction catalyst is low in precious metal content, high in hydrogen evolution catalytic activity, and stable in catalytic performance; the preparationtechnology conditions are easy to control; the repeatability is high; the production efficiency is high; the acidic hydrogen evolution reaction catalyst can be used in hydrogen evolution reaction electrode preparation, electrochemical device preparation, and production of hydrogen and oxygen from water; the efficiency of production of hydrogen and oxygen from water can be increased; and the economical cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of electrochemical catalysis, and in particular relates to an oxygen evolution reaction catalyst and its preparation method and application. Background technique [0002] Hydrogen production by electrolysis of water is an advanced energy storage technology, which can convert dispersed, uncontrollable, and difficult-to-use renewable energy into controllable, clean and environmentally friendly hydrogen energy, and then generate electricity through fuel cell technology. The hydrogen production technology of electrolyzed water is the joint point of integration to form the integration of electricity, heat and gas network, and it is an important means to consume new energy on a large scale and realize the interconnection of power grid and gas network. Compared with the traditional alkaline electrolyzed water hydrogen production technology, proton exchange membrane (PEM) electrolyzed water has the advantages of hig...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B1/04
CPCC25B1/04C25B11/075Y02E60/36
Inventor 冯其陶有堃李辉王海江
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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