Preparation method of double-effect oxygen electrode catalyst with core-shell structure for fuel cells

A dual-effect oxygen electrode, core-shell structure technology, applied in battery electrodes, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of cumbersome preparation steps and harsh reaction conditions, and achieve Simple and effective preparation method, reduced loading, excellent oxygen reduction activity and oxygen evolution activity
CN103170329BActive Publication Date: 2014-12-10DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Publication Date
2014-12-10

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Abstract

The invention provides a preparation method of double-effect oxygen electrode catalyst with a core-shell structure for unitized regenerative fuel cells. The preparation method includes the following steps: firstly preparing nano dendritic crystal Ir by utilizing strong reducing agents, and then, depositing platinum on the surface of Ir by utilizing a weak reducing agent to obtain Ir@Pt nano particles with core-shell structure. The preparation method is simple and effective, and the particle size distribution of the obtained Ir@Pt catalysts with the core-shell structure is from 10nm to 20nm, and the Ir@Pt catalyst has nano dendritic crystal morphology. The preparation method is simple and effective, and moderate in reaction condition, and the obtained catalyst has good oxygen reduction and oxygen evolution activities, and can be perfectly applied to the unitized regenerative fuel cells.
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Description

technical field

[0001] The invention relates to a preparation method of a core-shell structure nano catalyst, in particular to a preparation method of a core-shell structure double-effect oxygen electrode catalyst applicable to an integrated renewable fuel cell. Background technique

[0002] With the depletion of fossil energy and the development of renewable energy such as solar energy and wind energy, the application of renewable fuel cells (RFC) as an energy storage system on land and space has attracted great attention from all over the world. It can cooperate with renewable energy such as wind energy and solar energy to achieve self-sufficiency, and has the advantages of large energy storage capacity, high specific energy, no self-discharge, low environmental pollution, good reliability and maintainability, etc. Energy storage systems that replace traditional secondary batteries in the fields of space, military and mobile power sources.

[0003] According to the differ...

Claims

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