Carbon supported Pt-shell modified PdCo-core with electrocatalyst for methanol oxidation

被引：61

作者：

Wang, Rongfang ^{[1
]}

Wang, Hui ^{[1
]}

Wei, Bangxing ^{[1
]}

Wang, Wei ^{[1
]}

Lei, Ziqiang ^{[1
]}

机构：

[1] NW Normal Univ, Coll Chem & Chem Engn, Key Lab Gansu Polymer Mat, Lanzhou 730070, Gansu, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 19期

关键词：

Electrocatalyst; Fuel cells; Methanol oxidation; Nanoparticles; FUEL-CELLS; OXYGEN REDUCTION; NANOPARTICLES; CATALYSTS; TEMPERATURE; PERFORMANCE; ELECTRODES; ANODE;

D O I：

10.1016/j.ijhydene.2010.07.008

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A catalyst for anode oxidation of methanol, carbon supported pseudo-core-shell PdCo@Pt particles with Pt shell is prepared via a two-step procedure, which consists of an organic colloid method and a surface replacement reaction step. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) are used for the catalysts characterization. The electrochemical surface areas (ECSA) are 6 and 4 times as large as those of Pt/C and PtRu/C catalysts, respectively. Furthermore, based on the Pt mass, the cyclic voltammetry (CV) and chronoamperometry results demonstrate that the electrocatalytic activity and stability of the PdCo@Pt/C catalyst for methanol oxidation are much higher than those of the Pt/C and PtRu/C catalysts. The PdCo@Pt/C catalyst is better utilization of Pt than pure Pt and Pt-based alloy catalysts. [GRAPHICS] (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.

引用

页码：10081 / 10086

页数：6

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