Nickel foam-loaded silver-doped nickel-based bimetallic hydroxide electrocatalytic hydrogen evolution catalyst and preparation method thereof

A technology of hydroxide electricity and hydroxide, which is applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of restricting the development of hydrogen energy application of electrolysis water technology, the high price of Pt, and the increase of electrolyzer pressure, so as to achieve good catalysis Hydrogen evolution effect, simple steps, effect of increasing surface area

Inactive Publication Date: 2019-04-16
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The important basis for evaluating the development level of electrolytic water hydrogen production technology is the unit power consumption. In theory, according to Faraday's law, the production of 1m 3 (Standard) hydrogen electricity consumption is 2.94kW.h, while industrial production electricity consumption is about twice the theoretical value, mainly due to the existence of hydrogen evolution overpotential in the production process, which increases the electrolyzer pressure and energy consumption , restricting the development of electrolyzed water technology and hydrogen energy application
The most commonly used Pt-based catalysts have excellent electrocatalytic hydrogen evolution activity, but Pt is expensive and resource scarce

Method used

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  • Nickel foam-loaded silver-doped nickel-based bimetallic hydroxide electrocatalytic hydrogen evolution catalyst and preparation method thereof
  • Nickel foam-loaded silver-doped nickel-based bimetallic hydroxide electrocatalytic hydrogen evolution catalyst and preparation method thereof
  • Nickel foam-loaded silver-doped nickel-based bimetallic hydroxide electrocatalytic hydrogen evolution catalyst and preparation method thereof

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Embodiment 1

[0032] Preparation of foamed nickel-supported silver-doped nickel-based double metal hydroxide electrocatalytic hydrogen evolution catalyst, the specific steps are as follows:

[0033] (1) Three-dimensional nickel foam (1×3cm 2 , the purity is 99.99%, and the porosity is 95%) ultrasonicated in 1 mol / liter hydrochloric acid solution for 20 minutes to remove oxides on its surface, then cleaned with pure water, put in absolute ethanol to degrease and remove oil for 20 minutes, and finally Ultrasound in pure water for 10 minutes;

[0034] (2) Mix nickel nitrate, copper nitrate, urea, amine fluoride, and pure water uniformly to obtain solution 1, wherein the molar concentration of nickel is 0.02 moles / liter, the molar concentration of copper is 0.01 moles / liter, and the molar concentration of urea is 0.15 mole / liter, and the molar concentration of ammonium fluoride is 0.15 mole / liter; Silver nitrate and pure water are mixed uniformly to obtain solution 2, wherein the molar concent...

Embodiment 2

[0040] Preparation of foamed nickel-supported silver-doped nickel-based double metal hydroxide electrocatalytic hydrogen evolution catalyst, the specific steps are as follows:

[0041] (1) Three-dimensional nickel foam (1×3cm 2 , the purity is 99.99%, and the porosity is 95%) ultrasonicated in 1 mol / liter hydrochloric acid solution for 20 minutes to remove oxides on its surface, then cleaned with pure water, put in absolute ethanol to degrease and remove oil for 20 minutes, and finally Ultrasound in pure water for 10 minutes;

[0042] (2) Nickel nitrate, chromium nitrate, urea, amine fluoride, pure water are mixed uniformly, obtain solution 1, wherein the molar concentration of nickel is 0.02 mol / liter, the molar concentration of chromium is 0.005 mol / liter, the concentration of urea is 0.125 mol / liter, the concentration of ammonium fluoride is 0.125 mol / liter; silver nitrate and pure water are mixed uniformly, obtain solution 2, wherein the molar concentration of silver ion ...

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Abstract

The invention relates to a nickel foam-loaded silver-doped nickel-based bimetallic hydroxide electrocatalytic hydrogen evolution catalyst and a preparation method thereof. The catalyst takes foam nickel as a carrier, nickel-based bimetallic hydroxide of a laminated structure is uniformly arranged and grows on the surface of foam nickel, and nano-silver particles are uniformly attached to the surface of the nickel-based bimetallic hydroxide. The nickel foam-loaded silver-doped nickel-based bimetallic hydroxide electrocatalytic hydrogen evolution catalyst takes three-dimensional porous foam nickel of a net structure as a carrier, the nickel-based bimetallic is combined with the carrier firmly, distribution is uniform, the catalyst has the good catalytic hydrogen evolution effect under the alkaline condition, and the stable catalytic activity can be kept in a long time.

Description

technical field [0001] The invention belongs to the field of electrolytic water catalysis for hydrogen evolution, and in particular relates to an electrocatalytic hydrogen evolution catalyst supported by foamed nickel supported by silver and doped with a nickel-based double metal hydroxide and a preparation method thereof. Background technique [0002] At present, the main sources of energy in the world are still coal, oil and natural gas. With the development of the world economy, the use of energy is increasing. As non-renewable energy, fossil fuels are facing the danger of depletion. The low energy efficiency and the increasing internationalization of environmental issues have prompted the strengthening of energy research and development. Among the many new energy sources that have been developed, hydrogen energy is considered to be the most ideal clean energy due to its simple production process, simple source, clean and pollution-free, and high energy density. Hydrogen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/06C25B11/03C25B1/04
CPCC25B1/04C25B11/031C25B11/051C25B11/057C25B11/091Y02E60/36
Inventor 喻发全童晶王蕾王建芝李巍薛亚楠蔡宁
Owner WUHAN INSTITUTE OF TECHNOLOGY
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