a kind of nife 3 n/nf electrochemical catalyst and its preparation method and application

A catalyst and electrochemical technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problem of poor electronic conductivity of Ni-based catalysts, incapable of large-scale production, and scarce crustal content, etc. problems, to achieve the effect of low raw material cost, easy operation, and improved oxygen evolution performance
CN107159293BActive Publication Date: 2020-04-07SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2020-04-07

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Abstract

The invention discloses a NiFe 3 N / NF electrochemical catalyst and its preparation method and application. The electrochemical catalyst is derived by heat treatment of bimetallic MOF, with K 4 Fe(CN) 6 As a ligand, the ligand contains Fe, which provides an Fe source. The complexing agent ligand is combined with the central metal Ni to form a bimetallic MOF. It is synthesized in situ on the Ni substrate, which not only utilizes the conductivity of the Ni substrate, but also passes The in-situ synthesis reduces the resistance between the MOF and the Ni substrate, synthesizes the bimetallic MOF in one step, and takes advantage of the porosity of the MOF. At the same time, the MOF is heat-treated after being wrapped with an alkali metal salt to maintain the morphology of the MOF. The preparation method of the present invention has simple process, low raw material cost, easy operation and high repeatability. The prepared NiFe 3 N / NF electrochemical catalyst is used to electrocatalyze oxygen evolution reaction.
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Description

Technical field

[0001] The invention belongs to the technical field of electrocatalytic materials, and specifically relates to a NiFe 3 N / NF electrochemical catalyst and its preparation method and application. Background technique

[0002] The two major survival challenges facing human beings are energy and environmental issues. With the large-scale exploitation and consumption of fossil fuels, not only has fossil fuels become extremely scarce, but also a series of environmental pollution problems have been brought about. Renewable energy is paying more and more attention, and it has also set off a research climax in energy conversion and storage.

[0003] Hydrogen energy, due to its high energy density, high energy conversion efficiency, and environmental friendliness, is regarded as an ideal energy source to alleviate the energy shortage in the future. At present, there are roughly three methods for producing hydrogen in industry: 1. Primary energy conversion, such as coal, petr...

Claims

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