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Composite hydrogen evolution electrode with copper and cobalt loaded on three-dimensional foamed nickel and preparation method thereof

A technology of hydrogen evolution electrode and nickel foam, which is applied in the fields of electrocatalytic hydrogen production and material science, can solve the problems of expensive precious metals, etc., and achieve the effects of simple operation, low production cost and simple process

Active Publication Date: 2014-07-16
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Noble metals such as Pd and Pt are metal electrode materials with excellent electrocatalytic hydrogen evolution activity, but because these noble metals are expensive and difficult to be widely used in industrial production, research and development of new cathodes with low price, high activity, and low hydrogen evolution overpotential Non-precious metal material hydrogen evolution electrode is very important

Method used

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  • Composite hydrogen evolution electrode with copper and cobalt loaded on three-dimensional foamed nickel and preparation method thereof
  • Composite hydrogen evolution electrode with copper and cobalt loaded on three-dimensional foamed nickel and preparation method thereof
  • Composite hydrogen evolution electrode with copper and cobalt loaded on three-dimensional foamed nickel and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0033] A preparation method of a composite hydrogen evolution electrode supported by copper and cobalt on three-dimensional nickel foam is carried out according to the following steps,

[0034] a. Degrease and degrease the three-dimensional nickel foam in acetone for 1 minute, wash with ultrapure water, then acidify and activate it in 18wt.% hydrochloric acid solution, and finally place it in ultrapure water for 4 minutes;

[0035] b. Put the three-dimensional nickel foam treated in step a into the copper pyrophosphate solution, or the copper pyrophosphate solution, potassium pyrophosphate solution, and ammonium citrate solution, or a mixed solution of one or both of them, with the copper sheet as the anode , three-dimensional nickel foam as the cathode, at a current density of 0.01A / cm 2 Electrodeposition for 500s using a multifunctional pulse plating power supply under a high current;

[0036] c, cleaning the three-dimensional nickel foam with copper electrochemically depos...

Embodiment 2

[0041] A preparation method of a composite hydrogen evolution electrode supported by copper and cobalt on three-dimensional nickel foam is carried out according to the following steps,

[0042] a. Degrease and degrease the three-dimensional nickel foam in acetone for 1 minute, wash it with ultrapure water, then acidify and activate it in 18wt.% hydrochloric acid solution, and finally place it in ultrapure water for 5 minutes;

[0043] b. Put the three-dimensional nickel foam treated in step a into copper sulfate pentahydrate solution, or one or more mixed solutions of copper sulfate pentahydrate solution, biuret solution, sodium hydroxide solution, and glycerin, With copper sheet as anode and three-dimensional nickel foam as cathode, the current density is 0.03A / cm 2 Use a multi-functional pulse electroplating power supply for electrodeposition for 600s under a certain current;

[0044] c, cleaning the three-dimensional nickel foam with copper electrochemically deposited in s...

Embodiment 3

[0049] A preparation method of a composite hydrogen evolution electrode supported by copper and cobalt on three-dimensional nickel foam is carried out according to the following steps,

[0050] a. Degrease and degrease the three-dimensional nickel foam in acetone for 1 minute, wash with ultrapure water, then acidify and activate it in 18wt.% hydrochloric acid solution, and finally place it in ultrapure water for 7 minutes;

[0051] b. Put the three-dimensional nickel foam treated in step a into the mixed solution of copper sulfate pentahydrate and boric acid, take the copper sheet as the anode, and the three-dimensional nickel foam as the cathode, at a current density of 0.05A / cm 2 Electrodeposit for 700s using a multifunctional pulse electroplating power supply under high current;

[0052] c, cleaning the three-dimensional nickel foam with copper electrochemically deposited in step b with ultrapure water, and then ultrasonicating in ultrapure water for 7 minutes;

[0053] d....

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Abstract

The invention relates to a hydrogen evolution electrode with copper and cobalt loaded on three-dimensional foamed nickel, which can be used for an electro-catalysis hydrogen evolution reaction in alkaline solution and is capable of simultaneously loading base metals and a preparation method thereof, and belongs to the technical fields of material science and hydrogen production by electro-catalysis. The technical problem to be solved is to provide the composite hydrogen evolution electrode with copper and cobalt loaded on three-dimensional foamed nickel and a preparation method thereof. A method of plating a composite coating on an electro-mechanical surface is adopted, and copper and cobalt are electro-plated on the three-dimensional foamed nickel in sequence, so that the composite hydrogen evolution electrode is prepared. The prepared electrode has high catalytic activity, is non-toxic, and can keep stable structure and chemical activity under an alkaline condition. In addition, the preparation process of the composite hydrogen evolution electrode is simple, and is suitable for large-scale production.

Description

technical field [0001] The invention relates to a three-dimensional foam nickel-supported copper and cobalt hydrogen evolution electrode which can be used for electrocatalytic hydrogen evolution reaction in alkaline solution and simultaneously supports non-noble metal hydrogen evolution electrode and a preparation method thereof, which belongs to the field of material science and technology and the field of electrocatalytic hydrogen production. Background technique [0002] At present, humans mainly use non-renewable fossil energy such as petroleum and coal. Due to excessive exploitation by humans, these fossil energy sources have already faced the danger of depletion; and the use of fossil fuels has caused serious environmental pollution to humans, such as the greenhouse effect, acid rain and Haze, etc., seriously threaten human health and survival. Hydrogen is considered to be the most ideal energy carrier because of its abundant sources, clean and pollution-free, and high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/03C25B11/06C25B1/04C25D7/04C25D5/10
CPCY02E60/36
Inventor 王孝广马冠水何永伟王美
Owner TAIYUAN UNIV OF TECH
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