Pt-Co/C electrocatalysts for oxygen reduction in H2/O2 PEMFCs synthesized by borohydride method

被引：47
|
作者：
Salgado, JRC [1 ]
Antolini, E [1 ]
Gonzalez, ER [1 ]
机构：
[1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Paulo, Brazil
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2004年 / 151卷 / 12期
关键词：
D O I：
10.1149/1.1819832
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A Pt-Co/C electrocatalyst with Pt: Co atomic ratio 85: 15, prepared by a low-temperature chemical reduction with sodium borohydride, was studied as possible cathode material for polymer electrolyte membrane fuel cells (PEMFCs). The physical characterization of this electrocatalyst was performed by energy-dispersive X-ray analysis, X-ray diffraction, and transmission electron microscopy. The performance of the material was evaluated by cyclic voltammetry and polarization experiments in a single PEMFC and compared with those of an unalloyed Pt/C catalyst prepared by the same method and a commercial Pt-Co/C catalyst. Both the Pt-Co/C catalysts were also submitted to a thermal treatment in a reducing atmosphere. (C) 2004 The Electrochemical Society.
引用
收藏
页码：A2143 / A2149
页数：7
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