Bimetallic sulfide composite electrocatalyst and preparation method and application thereof

An electrocatalyst and sulfide technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., to achieve the effects of high hydrophilicity, large specific surface area, and shortened path
CN110694646AActive Publication Date: 2020-01-17SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI JIAO TONG UNIV
Publication Date
2020-01-17

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Abstract

The invention relates to a bimetallic sulfide composite electrocatalyst and a preparation method and application thereof. The electrocatalyst comprises a foamed nickel substrate and bimetallic sulfides growing on the foamed nickel substrate to form a 2D nano structure, and the bimetallic sulfides are NiS / Co9S8; the preparation method comprises the following steps: 1) foamed nickel is pretreated; 2) thiourea and Co(NO3).6H2O are dissolved in water, then the pretreated foam nickel is added, hydrothermal reaction is carried out, and then cooling, washing and drying are carried out to obtain the bimetallic sulfide composite electrocatalyst; and the electrocatalyst is used in electrocatalytic oxygen evolution or electrocatalytic hydrogen evolution. Compared with the prior art, the preparation process of the electrocatalyst is simple, safe and cheap; the electrocatalyst is high in catalytic activity and low in reaction energy barrier, has more activand e sites, and shortens the path of electron transfer; and the specific surface area is large, the electron transfer efficiency is improved, and the long-time stability is realized.
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Description

technical field

[0001] The invention belongs to the technical field of nanomaterial preparation and hydrogen production by splitting water, and relates to a bimetallic sulfide composite electrocatalyst and its preparation method and application. Background technique

[0002] With the increasingly severe environmental and energy crises, people are constantly looking for clean and sustainable alternative energy sources. Hydrogen has been recognized as the most ideal renewable energy. Electrocatalytic water splitting for hydrogen production is one of the most promising solutions so far. Among them, the efficiency of the oxygen evolution reaction (OER) is one of the key factors affecting the electrocatalytic water splitting for hydrogen production. Since OER is a slow reaction, a higher current density is required to drive it. It has been proven that ruthenium-based catalysts (such as RuO 2 ) and iridium-based catalysts (such as IrO 2 ) and other noble metal-based electroca...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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