Preparation method of Pt-Co/C-single-layer graphene for fuel cell

A single-layer graphene, fuel cell technology, applied in graphene, battery electrodes, circuits, etc., can solve the problems of expensive metal Pt, scarce resources, hindering the industrial production of fuel cells, etc., achieve excellent physical properties, and improve the degree of exfoliation. , the effect of excellent oxygen reduction electrocatalytic performance
CN103456969BActive Publication Date: 2015-04-08HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2015-04-08

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Abstract

The invention discloses a preparation method of Pt-Co / C-single-layer graphene for a fuel cell, belongs to the chemical synthesis field, and relates to a preparation method of graphene. The Pt-Co / C-single-layer graphene for the fuel cell is prepared by the following steps: (1), preparation of graphite oxide; (2), pre-treatment of active carbon XC-72; and (3), preparation of an rGO-XC-72 composite carrier-loaded Pt-Co alloy nano particle. The metal alloy nano particle-graphene and XC-72 active carbon composite catalyst prepared by utilizing a microwave ethylene glycol auxiliary reduction method is simple and easy to implement, and is high in efficiency. Moreover, the obtained graphene has a single-layer structure and the alloy particle has uniform particle diameter distribution and an average particle diameter of 1.5 nm. The catalytic activity of the nano particle can be improved by interaction with the XC-72 active carbon as well as electronic modification to the metal nano particle. And obtained catalyst has excellent oxygen-reduction electro-catalysis performances.
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Description

technical field

[0001] The invention belongs to the field of chemical synthesis and relates to a preparation method of graphene. Background technique

[0002] Graphene is a new type of material with a two-dimensional structure derived from graphite materials with a single-layer or multi-layer carbon atomic structure, which consists of carbon atomic structures arranged in a regular hexagonal structure. Graphene is a special material in the 21st century, and the thickness of single-layer graphene is only 0.335nm, which is the thinnest material found in the world. Compared with other carbon-based supports, single-layer graphene with a perfect structure has a larger theoretical specific surface area (about 2630m 2 g -1 ) and better electron conductivity (about 2×105cm 2 V -1 the s -1 ), can be widely used in electronics, chemistry, machinery and other fields. Recent research advances have shown that graphene-based materials have a profound impact on electronic and optoelec...

Claims

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