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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