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A kind of alkaline solution hydrogen evolution electrocatalyst nivru ternary alloy and its preparation method and application

A technology of alkaline solutions and ternary alloys, applied in electrodes, electrolytic components, electrolytic processes, etc., to achieve good electrochemical stability, short process, and excellent alkaline hydrogen evolution performance

Active Publication Date: 2022-03-11
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, how to precisely control the electronic structure of nickel-based materials to prepare low-ruthenium, high-efficiency basic hydrogen evolution electrocatalysts is still a big challenge.

Method used

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  • A kind of alkaline solution hydrogen evolution electrocatalyst nivru ternary alloy and its preparation method and application
  • A kind of alkaline solution hydrogen evolution electrocatalyst nivru ternary alloy and its preparation method and application
  • A kind of alkaline solution hydrogen evolution electrocatalyst nivru ternary alloy and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Weigh 2.7mmol nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 O), 0.3mmol vanadium chloride (VCl 3 ) was dissolved in 60mL of purified water, and then 15mmol of urea (CH 4 N 2 O), stirred for 15 minutes to obtain a green mixed solution.

[0039] (2) Pour the above green mixed solution into a polytetrafluoroethylene hydrothermal reaction kettle, put the hydrothermal reaction kettle into a blast drying oven, react for 4 hours under hydrothermal conditions at 120°C, and turn off the blast drying Cool the reactor to room temperature;

[0040] (3) Centrifuge the product obtained in the reaction kettle, wash twice with pure water solvent, then wash twice with ethanol solvent, and put it into a vacuum drying oven to dry to obtain a light yellow powder;

[0041] (4) Weigh 20 mg of the yellow powder obtained in step (3) and dissolve it in 25 mL of pure aqueous solution, add 0.5 mg of RuCl 3 Stir to obtain a mixed solution;

[0042] (5) Pour the mixed solution obtained in...

Embodiment 2

[0051] (1) Weigh 8mmol nickel chloride (NiCl 2 ), 0.4mmol of vanadium chloride was dissolved in 60mL of purified water, then 18mmol of urea was added, and stirred for 15 minutes to obtain a green mixed solution.

[0052] (2) Pour the above green mixed solution into a polytetrafluoroethylene hydrothermal reaction kettle, put the hydrothermal reaction kettle into a blast drying oven, react for 2 hours under hydrothermal conditions at 150°C, and turn off the blast drying Cool the reactor to room temperature;

[0053] (3) Centrifuge the product obtained in the reaction kettle, wash twice with pure water solvent, then wash twice with ethanol solvent, and put it into a vacuum drying oven to dry to obtain a light yellow powder;

[0054] (4) Weigh 10 mg of the yellow powder obtained in step (3) and dissolve it in 50 mL of pure aqueous solution, add 1.0 mg of RuCl 3 Stir to obtain a mixed solution;

[0055] (5) Pour the mixed solution obtained in step (4) into a hydrothermal reactio...

Embodiment 3

[0060] (1) Weigh 12mmol of nickel sulfate and 3mmol of vanadium chloride in 80mL of pure water, then add 150mmol of urea and stir for 15 minutes to obtain a green mixed solution.

[0061] (2) Pour the above green mixed solution into a polytetrafluoroethylene hydrothermal reaction kettle, put the hydrothermal reaction kettle into a blast drying oven, react under hydrothermal conditions at 90°C for 10 hours, and turn off the blast drying Cool the reactor to room temperature;

[0062] (3) Centrifuge the product obtained in the reaction kettle, wash twice with pure water solvent, then wash twice with ethanol solvent, and put it into a vacuum drying oven to dry to obtain a light yellow powder;

[0063] (4) Weigh 20 mg of the yellow powder obtained in step (3) and dissolve it in 25 mL of pure aqueous solution, add 2.0 mg of RuCl 3 Stir to obtain a mixed solution;

[0064] (5) Pour the mixed solution obtained in step (4) into a hydrothermal reaction kettle, react under hydrothermal...

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Abstract

The invention discloses an alkaline solution hydrogen evolution electrocatalyst NiVRu ternary alloy and its preparation method and application. The main component of the alkaline solution hydrogen evolution electrocatalyst NiVRu ternary alloy is Ni, wherein the mass percentage content of V element is 1- 15%, the mass percentage content of Ru element is 1-15%, and the mass percentage content of Ni element is 70-90%. The alkaline solution hydrogen evolution electrocatalyst NiVRu ternary alloy obtained by the preparation method of the present invention is used as an electrode material, not only has good alkaline hydrogen evolution performance, but also has a lower content of precious metal ruthenium, which can be as low as 1%, and at the same time It exhibits excellent electrochemical stability and good hydrogen evolution catalytic performance in alkaline electrolysis of water. The preparation method of the invention is simple, environmentally friendly and low-cost, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a hydrogen evolution electrocatalyst and its preparation method and application, in particular to an alkaline solution hydrogen evolution electrocatalyst NiVRu ternary alloy and its preparation method and application. Background technique [0002] Due to the excessive dependence on fossil fuels, the energy crisis and environmental pollution are becoming increasingly serious, so energy saving and environmental protection are the two most urgent challenges on the road to sustainable development in the 21st century. Hydrogen is expected to replace fossil fuels and is considered to be the most promising sustainable clean energy today. Electrochemical water splitting to produce hydrogen, as a simple and environmentally friendly zero-carbon hydrogen production process, has attracted much attention in recent years. Since the large-scale industrial production of hydrogen is mostly carried out in alkaline environments, compared with aci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/089C25B1/04
CPCC25B1/04Y02E60/36
Inventor 商爱国周敏张秀云薛玉雄曾祥华刘洋曹荣幸陈鹏辉
Owner YANGZHOU UNIV
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