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Porous electrode material with three metal Cu-Co-Mo/foamed nickel and preparation method and application of porous electrode material

A porous electrode, nickel foam technology, applied in the direction of electrode, electrode shape/type, electrolysis process, etc., can solve the problems of low catalytic activity, low specific surface area, low conductivity, etc., to improve catalytic activity, simple preparation process, excellent performance effect

Active Publication Date: 2018-11-13
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similar to other heterogeneous catalysts, the catalytic performance of hydrogen evolution reaction catalysts is affected by the density and reactivity of active sites. At present, factors such as low conductivity, low specific surface area, and instability under operating voltage are important factors that lead to low catalytic activity. reason

Method used

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  • Porous electrode material with three metal Cu-Co-Mo/foamed nickel and preparation method and application of porous electrode material
  • Porous electrode material with three metal Cu-Co-Mo/foamed nickel and preparation method and application of porous electrode material
  • Porous electrode material with three metal Cu-Co-Mo/foamed nickel and preparation method and application of porous electrode material

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Experimental program
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Effect test

Embodiment 1

[0032] The preparation method of the present invention possesses trimetallic Cu-Co-Mo / nickel foam porous electrode material specifically comprises the following steps:

[0033] a. Pretreatment of conductive substrate

[0034] Select the cut 1×1cm 2 Soak nickel foam in methanol, ethanol, tetrahydrofuran, chloroform and one or more solvents for ultrasonic treatment for 10-50 minutes, and then use hydrochloric acid solution for ultrasonic treatment for 15 minutes to chemically remove oil and surface oxides; The nickel substrate was rinsed with ionized water, and the concentration of hydrochloric acid used was 1mol / L.

[0035] b. Growth of hydrothermal synthesis products on nickel foam

[0036] CuCl was hydrothermally 2 , Co(NO 3 ) 2 、Na 2 MoO 4 Three kinds of precursor materials were dissolved in 50mL deionized water to obtain copper, cobalt, and molybdenum salt compound precursor solution, wherein the molar ratio of Cu, Co, and Mo three elements was 1:1:0.25, and the foam...

Embodiment 2

[0041] Step a is the same as embodiment 1

[0042] b. Growth of hydrothermal synthesis products on nickel foam

[0043] CuCl was hydrothermally 2 , Co(NO 3 ) 2 、Na 2 MoO 4 Three kinds of precursor materials were dissolved in 50mL deionized water to obtain copper, cobalt, and molybdenum salt compound precursor solution, wherein the molar ratio of Cu, Co, and Mo three elements was 1:1:0.5, and the foam after the above pretreatment Nickel is placed together in an autoclave for closed reaction, the reaction temperature is 180°C, and the reaction time is 8 hours. After the reaction is completed, the product is washed and dried.

[0044] c. High temperature calcination reduction of hydrothermal synthesis products

[0045] The nickel foam with the hydrothermal synthesis product grown on the above surface was heated in 5% H 2 / 95% Ar atmosphere at 500°C for 5 hours, followed by natural cooling to obtain a Cu-Co-Mo trimetallic porous electrolytic water catalyst, that is, a trime...

Embodiment 3

[0048] Step a is the same as embodiment 1

[0049] b. Growth of hydrothermal synthesis products on nickel foam

[0050] CuCl was hydrothermally 2 , Co(NO 3 ) 2 、Na 2 MoO 4 Three kinds of precursor materials were dissolved in 50mL deionized water to obtain copper, cobalt, and molybdenum salt compound precursor solution, wherein the molar ratio of Cu, Co, and Mo three elements was 1:1:1, and the foam after the above pretreatment Nickel is placed together in an autoclave for closed reaction, the reaction temperature is 180°C, and the reaction time is 8 hours. After the reaction is completed, the product is washed and dried.

[0051] c. High temperature calcination reduction of hydrothermal synthesis products

[0052] The nickel foam with the hydrothermal synthesis product grown on the above surface was heated in 5% H 2 / 95%Ar atmosphere at 500°C for 5h, followed by natural cooling to obtain a Cu-Co-Mo trimetallic porous electrolytic water catalyst, that is, a trimetallic C...

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Abstract

The invention discloses a porous electrode material with three metal Cu-Co-Mo / foamed nickel and a preparation method and application of the porous electrode material. The method includes the steps that (1) greasy dirt and an oxide layer on the surface of foamed nickel are removed through an organic solution and acid; (2) a copper-cobalt-molybdenum salt compound precursor and the foamed nickel areput in an autoclave for sealed reaction, then washing and drying are performed, and foamed nickel of which the surface is grown with a hydro-thermal synthetic product; and (3) the foamed nickel obtained in the step (2) is subjected to high-temperature calcination under the H2 atmosphere, then natural cooling is performed, and a porous electrolysed water catalyst with the three metal Cu-Co-Mo / foamed nickel. The binding force between the three metal alloy and the substrate nickel in the composite material is high, the properties are stable under the alkaline conditions, the electrochemical active area is large, and the catalytic activity of the material is greatly improved; and through the preparation method, combination of the three metals with the foamed nickel substrate is achieved through a solvothermal method, the preparation is simple, the sintering temperature is low, the energy consumption during preparation is low, and the industrial production is facilitated.

Description

technical field [0001] The invention relates to the technical field of electrolyzing water to catalyze hydrogen evolution, in particular to a trimetallic copper-cobalt-molybdenum (Cu-Co-Mo) / foam nickel porous electrode material and its preparation method and application. Background technique [0002] The limited use of fossil energy and the increasing environmental degradation make it imperative to develop clean and renewable new energy and energy storage devices. Hydrogen energy is considered to be an ideal and feasible substitute for fossil fuels due to its advantages such as high energy density, no pollution, and sustainable utilization. However, hydrogen energy is not an energy resource that exists in large quantities in nature, but needs to be produced. Among the many methods for producing hydrogen at present, electrolysis of water is one of the well-known and recognized hydrogen production methods, which is simple, mature, clean and pollution-free. The hydrogen produ...

Claims

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Application Information

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IPC IPC(8): C25B1/04C25B11/03C25B11/04C25B11/06
CPCC25B1/04C25B11/031C25B11/057C25B11/091Y02E60/36
Inventor 喻发全刘曼玉王建芝谌伟明薛亚楠蔡宁
Owner WUHAN INSTITUTE OF TECHNOLOGY
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