Graphene-based composite air electrode catalyst and preparation method thereof

A graphene-based catalyst technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve simple operation, low cost, and excellent catalytic effect
CN102255086BInactive Publication Date: 2013-10-09INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
Publication Date
2013-10-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an oxygen reduction reaction catalyst with graphene as a carrier, and a preparation method thereof. The invention provides a graphene-based composite oxygen reduction reaction catalyst and a preparation method thereof. The catalyst comprises graphene and cobalt hydroxide, and the loading amount of cobalt hydroxide is 3.2-15 microgram / cm2. The preparation method of the graphene-based composite oxygen reduction reaction catalyst comprises: depositing a cobalt hydroxide precipitate on a surface of a graphene membrane by a potentiostatic deposition method so as to obtain the graphene-based composite oxygen reduction reaction catalyst.
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Description

technical field

[0001] The invention relates to an oxygen reduction reaction catalyst with graphene as a carrier and a preparation method thereof. Background technique

[0002] The widespread application of air electrodes in energy conversion systems such as fuel cells and metal-air batteries has drawn attention to the cathodic reaction of oxygen reduction. Since the oxygen reduction reaction is a kinetically slow process, the development of high-performance catalysts has always been a hot spot in this field. Platinum (Pt)-based materials are considered to be the most active and efficient oxygen reduction reaction catalysts, but their high cost and scarce resources limit their commercial applications. Therefore, the development of high-performance non-Pt oxygen reduction reaction catalysts has important application value.

[0003] Since the discovery of graphene by the Geim research group in 2004, the preparation and application of graphene have attracted much attention. ...

Claims

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