In-situ XAFS fuel cell measurements of a carbon-supported Pt-Ru anode electrocatalyst in hydrogen and direct methanol operation

被引：44

作者：

Roth, C

Martz, N

Buhrmester, T

Scherer, J

Fuess, H

机构：

[1] TH Darmstadt, Inst Sci Mat, D-64287 Darmstadt, Germany

[2] Zentrum Sonnenenergie & Wasserstoff Forsch, D-89081 Ulm, Germany

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2002年 / 4卷 / 15期

关键词：

D O I：

10.1039/b204293b

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 special in-situ PEM fuel cell has been developed to make XAFS measurements during hydrogen and direct methanol operation possible. The chosen set-up in transmission allows for the on-line monitoring of changes in the catalysts oxidation states and their characteristic short-range order. In both operation modes, the catalyst is reduced during operation, as can be concluded from the XANES region of the spectra showing a decreased white-line intensity in E space.

引用

收藏

页码：3555 / 3557

页数：3

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