Influence of PEMFC Operating Conditions on the Durability of Pt3Co/C Electrocatalysts

被引：5

作者：

Dubau, L. ^{[1
]}

Durst, J. ^{[1
]}

Maillard, F. ^{[1
]}

Chatenet, M. ^{[1
]}

Andre, J. ^{[2
]}

Rossinot, E. ^{[2
]}

机构：

[1] Grenoble Univ, CNRS, UMR 5631, LEPMI, 1130 Rue Piscine,BP75, F-38402 St Martin Dheres, France

[2] Axane, F-38360 Sassenage, France

来源：

POLYMER ELECTROLYTE FUEL CELLS 10, PTS 1 AND 2 | 2010年 / 33卷 / 01期

关键词：

MEMBRANE FUEL-CELLS; OXYGEN REDUCTION; ALLOYS; NANOPARTICLES; DEGRADATION; FE; CO;

D O I：

10.1149/1.3484538

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

This work is dedicated to the characterization of structure and composition change of the membrane electrode assembly (MEA) upon on-site proton-exchange membrane fuel-cell (PEMFC) operation (constant current load and start/stop conditions), with special emphasis on the Pt3Co/C cathode electrocatalyst. A fast degradation of the cathode catalytic layer was monitored. It yielded to the redistribution of both Pt and Co elements within the whole MEA, decrease of the MEA thickness and a continuous leaching of the surface/bulk Co atoms. The cell performance decay is discussed in the light of these changes.

引用

页码：399 / +

页数：2

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