Electrochemical Stability of PtCu and PtCuCo Core-Shell Oxygen Reduction Reaction Electrocatalysts in Liquid Electrolyte

被引：13

作者：

Neyerlin, K. C. ^{[1
]}

Srivastava, Ratndeep ^{[1
]}

Strasser, Peter ^{[1
]}

机构：

[1] Univ Houston, Dept Chem & Biomol Engn, Houston, TX 77204 USA

来源：

PROTON EXCHANGE MEMBRANE FUEL CELLS 8, PTS 1 AND 2 | 2008年 / 16卷 / 02期

关键词：

D O I：

10.1149/1.2981885

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：

Pt25Cu75 and Pt20Cu20Co60 electrochemically dealloyed electrocatalysts were shown to possess improved resistance to electrochemical surface area (ECSA) loss relative to commercially available Pt/HSC and Pt/Vu catalysts. The difference in ECSA loss was shown to be directly related to the temperature at which the alloy catalysts were prepared (i.e. reduced/annealed), with higher temperatures resulting in greater resistance to ECSA loss. To normalize for preparation conditions, commercially available catalysts were exposed to a heat treatment process mimicking the annealing/reducing procedure for the Pt alloys.

引用

页码：509 / 514

页数：6

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