Highly dispersed molybdenum carbide as non-noble electrocatalyst for PEM fuel cells: Performance for CO electrooxidation

被引：27

作者：

Guil-Lopez, R. ^{[1
]}

Martinez-Huerta, M. V. ^{[1
]}

Guillen-Villafuerte, O. ^{[2
]}

Pena, M. A. ^{[1
]}

Fierro, J. L. G. ^{[1
]}

Pastor, E. ^{[2
]}

机构：

[1] CSIC, Inst Catalisis & Petroleoquim, E-28049 Madrid, Spain

[2] Univ La Laguna, Dept Quim Fis, E-38071 Tenerife, Spain

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 15期

关键词：

Non-noble metal electrocatalyst; Molybdenum carbide; PEMFC; CO electrooxidation; TUNGSTEN CARBIDE; CARBON; OXIDATION; BEHAVIOR;

D O I：

10.1016/j.ijhydene.2010.05.044

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：

CO electrooxidation on nanocrystalline molybdenum carbide has been studied through CO stripping measurements using cyclic voltammetry. The active molybdenum carbide was obtained from the carbothermic reduction of really very small molybdenum oxide particles supported on Vulcan XC-72 carbon black (CB). In order to obtain highly dispersed molybdenum carbide particles, low molybdenum loading and control of the carbothermic reduction conditions of CB-supported molybdenum oxide were employed to avoid Mo sintering during the carburization process. This work provides experimental evidence on the CO electrooxidation capability of the Mo carbide phase, which to the best of our knowledge is reported for the first time. The small particle size of carbide electrocatalyst exhibited better performance for CO electrooxidation than the commercial bulk molybdenum carbide sample. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.

引用

页码：7881 / 7888

页数：8

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