Graphene-CeO2 hybrid support for Pt nanoparticles as potential electrocatalyst for direct methanol fuel cells

被引：135
作者：
Yu, Shuping [1 ]
Liu, Qiubo [1 ]
Yang, Wensheng [1 ]
Han, Kefei [1 ]
Wang, Zhongming [1 ]
Zhu, Hong [1 ]
机构：
[1] Beijing Univ Chem Technol, Fac Sci, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2013年 / 94卷
基金：
国家高技术研究发展计划(863计划); 美国国家科学基金会;
关键词：
Cerium oxide; Pt catalyst; Graphene; Oxygen reduction reaction; Methanol oxidation; OXYGEN REDUCTION REACTION; CARBON NANOFIBERS; ENHANCED ACTIVITY; PT/C CATALYSTS; ELECTROOXIDATION; PERFORMANCE; NANOSTRUCTURES; MONOLAYER; STABILITY; NANOTUBES;
D O I：
10.1016/j.electacta.2013.01.149
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Graphene-CeO2 hybrid was prepared and used as the support of Pt nanoparticles for direct methanol fuel cell (DMFC). The structure and morphology were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS); electrocatalytic properties of the catalysts were investigated by cyclic voltammetry (CV), linear sweep voltammetry (LSV) and chronoamperometry (CA). The experimental results showed that the electrocatalytic activities for methanol oxidation and oxygen reduction on this catalyst were greatly improved due to the strong interaction between Pt and CeO2. Especially, the Pt-CeO2 catalyst with the CeO2 content of 7 wt.% showed the best electrocatalytic performances for methanol oxidation and oxygen reduction. It can be concluded that the graphene-CeO2 hybrid could be used as a potential and effective support for fuel cell application. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：245 / 251
页数：7
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