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Method for synthesizing cobalt-doped ferronickel mesh nanosheet array efficient bifunctional electrocatalyst and application

A nanosheet array, electrocatalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the constraints of large-scale synthesis and application, complex synthesis process , single catalytic performance and other problems, to achieve high-efficiency dual-function catalysis, solve the effect of single catalytic performance, simple and easy to operate process

Pending Publication Date: 2020-07-24
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing commercial hydrogen evolution reaction and oxygen evolution reaction catalysts are precious metals, the resources are scarce, the price is expensive, the industrial application is limited, and the synthesis process of the existing cheap nickel-iron catalyst is complicated, the cost is high, and the catalytic performance is single, which is seriously restricted. The problem of its large-scale synthesis and application, providing a method and application of synthesizing cobalt-doped nickel-iron mesh nanosheet arrays with high-efficiency bifunctional electrocatalysts

Method used

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  • Method for synthesizing cobalt-doped ferronickel mesh nanosheet array efficient bifunctional electrocatalyst and application
  • Method for synthesizing cobalt-doped ferronickel mesh nanosheet array efficient bifunctional electrocatalyst and application
  • Method for synthesizing cobalt-doped ferronickel mesh nanosheet array efficient bifunctional electrocatalyst and application

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Embodiment 1

[0040] Embodiment 1: A method for synthesizing cobalt-doped nickel-iron mesh nanosheet arrays with high-efficiency bifunctional electrocatalysts is completed in the following steps:

[0041] (1) Pretreatment of nickel foam:

[0042] Immerse the commercial foamed nickel in 0.5M dilute hydrochloric acid for 15 minutes, and after taking it out, first use absolute ethanol to ultrasonically clean it for 10 minutes, and then rinse it with deionized water for 3 times to obtain foamed nickel from which impurities have been removed;

[0043] The thickness 1.2mm of the commercial nickel foam described in step (1), aperture is 200 μ m;

[0044] The length of the commercial nickel foam described in the step (1) is 2cm, and the width is 3cm;

[0045] (2) Preparation of nickel-iron salt solution A:

[0046] Dissolve the iron salt, nickel salt and urea into deionized water, and magnetically stir for 5 minutes to obtain nickel-iron salt solution A;

[0047] In the nickel-iron salt solution...

Embodiment 2

[0060] Embodiment 2: A method for synthesizing cobalt-doped nickel-iron mesh nanosheet arrays with high-efficiency bifunctional electrocatalysts is completed in the following steps:

[0061] (1) Pretreatment of nickel foam:

[0062] Immerse the commercial foamed nickel in 2M dilute hydrochloric acid for 20 minutes, after taking it out, first use absolute ethanol to ultrasonically clean it for 15 minutes, and then rinse it with deionized water for 5 times to obtain the foamed nickel from which impurities have been removed;

[0063] The thickness 1.7mm of the commercial nickel foam described in step (1), aperture is 400 μ m;

[0064] The length of the commercial nickel foam described in the step (1) is 2cm, and the width is 4cm;

[0065] (2) Preparation of nickel-iron salt solution A:

[0066] Dissolve iron salt, nickel salt and urea in deionized water, and stir magnetically for 10 minutes to obtain nickel-iron salt solution A;

[0067] In the nickel-iron salt solution A desc...

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Abstract

The invention relates to a method for synthesizing a cobalt-doped ferronickel mesh nanosheet array efficient bifunctional electrocatalyst and application. The invention aims to solve the problem thatthe existing commercial hydrogen evolution reaction and oxygen evolution reaction catalyst is noble metal, high in price, poor in stability and limited in industrial application and the problem that the existing cheap ferronickel catalyst is complex in synthesis process, high in cost and single in catalytic performance and large-scale synthesis and application of the catalyst is thus seriously restricted. A simple two-pot hydrothermal method is adopted. Firstly, foamed nickel is pretreated, and then the pretreated foamed nickel is immersed into a nickel-iron salt solution, taken out after a hydrothermal reaction is conducted for a period of time, immersed into a cobalt salt solution for a hydrothermal reaction, taken out and dried to obtain the cobalt-doped ferronickel mesh nanosheet arrayefficient bifunctional electrocatalyst. The synthesis method is simple, convenient, low in cost, low in equipment requirement, capable of achieving large-scale production and suitable for industrialapplication. According to the method, the cobalt-doped ferronickel mesh nanosheet array efficient bifunctional electrocatalyst can be obtained.

Description

technical field [0001] The invention relates to a method and application for synthesizing a high-efficiency bifunctional electrocatalyst. Background technique [0002] In recent years, with the development of modern industry, energy issues and environmental issues have become increasingly prominent, and it is imminent to develop and utilize sustainable clean energy to replace existing fossil energy. Hydrogen energy has become the focus of scientists' attention due to its high combustion calorific value and no pollution. Compared with the production of hydrogen from fossil fuels, electrolysis of water for hydrogen production has a wide source of raw materials, high purity of hydrogen production, and strong operability, so it is considered to be the most promising method to obtain hydrogen energy. However, since the electrolysis of water hydrogen production technology involves two processes of hydrogen evolution reaction and oxygen evolution reaction, both of these two proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755C25B11/06C25B1/04B01J35/10
CPCB01J23/755C25B11/04C25B1/04B01J35/33Y02E60/36
Inventor 范爱玲曹小强谢登奎庞伟高殿超郭亚琪
Owner BEIJING UNIV OF TECH
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