Characterization of durable nanostructured thin film catalysts tested under transient conditions using analytical aberration-corrected electron microscopy

被引：6

作者：

Cullen, D. A. ^{[1
]}

More, K. L. ^{[1
]}

Reeves, K. S. ^{[1
]}

Vernstrom, G. D. ^{[2
]}

Atanasoska, L. L. ^{[2
]}

Haugen, G. M. ^{[2
]}

Atanasoski, R. T. ^{[2
]}

机构：

[1] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

[2] 3M Fuel Cell Components, 3M Cent Res, St Paul, MN 55144 USA

来源：

POLYMER ELECTROLYTE FUEL CELLS 11 | 2011年 / 41卷 / 01期

关键词：

D O I：

10.1149/1.3635642

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The stability of Ru0.1Ir0.9 oxidation evolution reaction (OER) catalysts deposited on Pt-coated nanostructured thin films (NSTFs) has been investigated by aberration-corrected electron microscopy. Accelerated stress tests showed that the OER catalysts significantly improved the durability of the Pt under cell reversal conditions. High-resolution images of the end-of-life NSTFs showed significant Ir loss from the whisker surfaces, while no Pt loss was observed. The retention of the Pt indicated that the OER catalysts had protected the catalyst-coated whisker surfaces from degradation.

引用

页码：1099 / 1103

页数：5

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