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A kind of composite hydrogen evolution electrode with copper and cobalt loaded on three-dimensional nickel foam and its preparation method

A technology of hydrogen evolution electrode and nickel foam, which is applied in the direction of electrodes, electrode shape/type, electrolysis process, etc., can solve the problems of expensive precious metals, etc., and achieve the effects of simple operation, small environmental impact, and simple process

Active Publication Date: 2016-05-18
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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  • A kind of composite hydrogen evolution electrode with copper and cobalt loaded on three-dimensional nickel foam and its preparation method
  • A kind of composite hydrogen evolution electrode with copper and cobalt loaded on three-dimensional nickel foam and its preparation method
  • A kind of composite hydrogen evolution electrode with copper and cobalt loaded on three-dimensional nickel foam and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

[0035] b. Put the three-dimensional nickel foam treated in step a into the copper pyrophosphate solution, or a mixture of one or two of the copper pyrophosphate solution, potassium pyrophosphate solution, and ammonium citrate solution, with the copper sheet as the anode , The three-dimensional nickel foam is the cathode, and the current density is 0.01A / cm 2 Use a multifunctional pulse electroplating power supply for electrodeposition for 500s at a current of 500 s;

[0036] c. Clean the three-dimensional nickel foam on which copper is electroche...

Embodiment 2

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

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

[0043] b. Put the three-dimensional nickel foam treated in step a into a copper sulfate pentahydrate solution, or a mixture of one or more of copper sulfate pentahydrate solution and 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-function pulse electroplating power supply for electro-deposition for 600 s at a current

[0044] c. Clean the three-dimensional nickel foam on which copper is electrochemically deposited in s...

Embodiment 3

[0049] A preparation method of a three-dimensional nickel foam supported copper and cobalt composite hydrogen evolution electrode 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, with the copper sheet as the anode and the three-dimensional nickel foam as the cathode, at a current density of 0.05A / cm 2 Use a multi-function pulse electroplating power supply to electrodeposition for 700s at a current of 700s;

[0052] c. Clean the three-dimensional nickel foam on which copper is electrochemically deposited in step b with ultrapure water, and then sonicate it in ultrapure water for 7 minutes;

[0053] d. Put the thr...

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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 that can be used for electrocatalytic hydrogen evolution reactions in alkaline solutions and simultaneously supports non-noble metal hydrogen evolution electrodes and a preparation method thereof, belonging 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 oil and coal. Due to human over-exploitation, these fossil energy sources are already in danger of being exhausted; and the use of fossil fuels causes serious environmental pollution to humans, such as the greenhouse effect, acid rain, and Smog, etc., seriously threaten human health and survival. Hydrogen is considered to be the most ideal energy carrier because of its abundant sources, clean, pollution-free, and efficient combustion. Hydrogen pr...

Claims

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Application Information

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Patent Type & Authority Patents(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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