Direct synthesis of few-layer graphene supported platinum nanocatalyst for methanol oxidation

被引：8
作者：
Tan, Hong [1 ,2 ]
Ma, Xiaohui [1 ,2 ]
Sheng, Leimei [1 ,2 ]
An, Kang [1 ,2 ]
Yu, Liming [1 ,2 ]
Zhao, Hongbin [2 ,3 ]
Xu, Jiaqiang [3 ]
Ren, Wei [1 ,4 ]
Zhao, Xinluo [1 ,2 ]
机构：
[1] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China
[2] Shanghai Univ, Inst Low Dimens Carbons & Device Phys, Shanghai 200444, Peoples R China
[3] Shanghai Univ, Dept Chem, Shanghai 200444, Peoples R China
[4] Shanghai Univ, Int Ctr Quantum & Mol Struct, Shanghai 200444, Peoples R China
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2014年 / 53卷 / 11期
基金：
中国国家自然科学基金;
关键词：
MULTIWALLED CARBON NANOTUBES; FUEL-CELLS; ELECTROCATALYTIC ACTIVITY; CATALYTIC PERFORMANCE; RAMAN-SPECTROSCOPY; OXYGEN REDUCTION; NANOPARTICLES; ELECTROOXIDATION; COMPOSITE; FUNCTIONALIZATION;
D O I：
10.7567/JJAP.53.117101
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
High-crystalline few-layer graphene supported Pt nanoparticles have been synthesized by arc discharge evaporation of carbon electrodes containing Pt element. A high-temperature treatment under hydrogen atmosphere has been carried out to obtain a new type of Pt/graphene catalyst for methanol oxidation in direct methanol fuel cell. The morphology and structure characterizations of as-grown few-layer graphene supported Pt nanoparticles and Pt/graphene catalysts have been studied by Raman spectroscopy, scanning electron microscopy with energy-dispersive spectroscopy, and high-resolution transmission electron microscopy. Cyclic voltammograms and chronoamperometric curves show that our present Pt/graphene catalysts have larger current density for methanol oxidation, higher tolerance to carbon monoxide poisoning, and better stability during the operating procedure, compared to commercial Pt/C catalysts. (C) 2014 The Japan Society of Applied Physics.
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页数：7
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