Enhanced electrocatalytic oxidation of methanol on Pd/polypyrrole-graphene in alkaline medium

被引：358

作者：

Zhao, Yanchun ^{[1
]}

Zhan, Lu ^{[1
]}

Tian, Jianniao ^{[1
]}

Nie, Sulian ^{[1
]}

Ning, Zhen ^{[1
]}

机构：

[1] Guangxi Normal Univ, Key Lab Chem & Mol Engn Med Resources, Minist Educ China, Coll Chem & Chem Engn, Guilin 541004, Guangxi, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2011年 / 56卷 / 05期

关键词：

Graphene; Polypyrrole; Pd nanoparticles; Alkaline direct methanol fuel cells; ELECTRO-CATALYTIC OXIDATION; TERNARY COMPOSITE FILMS; WALLED CARBON NANOTUBES; PD NANOWIRE ARRAYS; ETHANOL ELECTROOXIDATION; NI; PERFORMANCE; NANOFIBERS; SUPPORT; BINARY;

D O I：

10.1016/j.electacta.2010.12.005

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The new electrocatalyst of Pd nanoparticles supported on polypyrrole-functionalized graphene (Pd/PPy-graphene) was reported. Microstructure, morphology and crystallinity of the synthesized materials were investigated by Fourier transform infrared spectrometry (FT-IR). scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. The elements of the composite were characterized using energy dispersive X-ray spectroscopy (EDS). The results showed that the polypyrrole-wrapped graphene support successfully discrete Pd nanoparticles with the crystallite size of about 6 nm. Catalyst activity for methanol electro-oxidation in fuel cells was investigated by cyclic voltammetry (CV) and chronoamperometry. The fundamental electrochemical test results indicated that the electrocatalytic activity of Pd/PPy-graphene is much better than that of commercial catalyst for methanol oxidation. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1967 / 1972

页数：6

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