Platinum catalyst degradation in phosphoric acid fuel cells for stationary applications

被引：22
作者：
Aindow, T. T. [1 ]
Haug, A. T. [1 ]
Jayne, D. [1 ]
机构：
[1] UTC Power Corp, S Windsor, CT 06074 USA
来源：
JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 10期
关键词：
PAFC; Cathode catalyst; Catalyst degradation; Electrochemical surface area; Platinum particle migration; Particle coalescence; SUPPORTED METAL-CATALYSTS; GRAPHITIZED CARBON-BLACK; SURFACE-AREA LOSS; SIZE DISTRIBUTIONS; CRYSTALLITE GROWTH; OXYGEN; RECRYSTALLIZATION; DISSOLUTION; REDUCTION; PARTICLES;
D O I：
10.1016/j.jpowsour.2011.01.027
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 study is presented on the degradation of platinum alloy cathode catalysts operated in phosphoric acid fuel cells. The impact of time and temperature on the fundamental decay mechanism was studied with a surface area loss model and experimental electrochemical surface area measurements. It is suggested that platinum particle migration on the carbon support surface is the dominant mechanism for surface area change in these catalysts. (C) 2011 Elsevier B.V. All rights reserved.
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页码：4506 / 4514
页数：9
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