Development of an in-situ cell for X-ray absorption measurements during fuel cell operation

被引：12
作者：
Roth, C [1 ]
Benker, N [1 ]
Mazurek, M [1 ]
Scheiba, F [1 ]
Fuess, H [1 ]
机构：
[1] Tech Univ Darmstadt, Inst Mat Sci, D-64287 Darmstadt, Germany
来源：
ADVANCED ENGINEERING MATERIALS | 2005年 / 7卷 / 10期
关键词：
D O I：
10.1002/adem.200500122
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An in-situ X-ray absorption cell is designed to pursue the potential and and fuel dependant changes in the electrocatalyst structure during real fuel cell operation. It was observed that the set-up in transmission geometry with an graphite beam window was not successful at the Ru K-edge due to the strong absorption of Pt in the Pt-Ru anode catalyst. So, the cell is modified using either a Be or a Kapton foil window to make florescence measurement possible. The results show that the unsupported system undergoes structural changes similar to those revealed for carbon-supported Pt-Ru in fuel cell operation.
引用
收藏
页码：952 / 956
页数：5
相关论文
共 23 条
[1]   Recent developments in polymer electrolyte fuel cell electrodes [J].
Antolini, E .
JOURNAL OF APPLIED ELECTROCHEMISTRY, 2004, 34 (06) :563-576
[2]   Components for PEM fuel cell systems using hydrogen and CO containing fuels [J].
Divisek, J ;
Oetjen, HF ;
Peinecke, V ;
Schmidt, VM ;
Stimming, U .
ELECTROCHIMICA ACTA, 1998, 43 (24) :3811-3815
[3]   Go to where the market is! Challenges and opportunities to bring fuel cells to the international market [J].
Evers, AA .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2003, 28 (07) :725-733
[4]   Activity of PtRuMeOx (Me = W, Mo or V) catalysts towards methanol oxidation and their characterization [J].
Jusys, Z ;
Schmidt, TJ ;
Dubau, L ;
Lasch, K ;
Jörissen, L ;
Garche, J ;
Behm, RJ .
JOURNAL OF POWER SOURCES, 2002, 105 (02) :297-304
[5]   Oxidation of methanol on Pt, Pt-Ru, and Pt-Ru-Mo electrocatalysts dispersed in polyaniline:: An in situ infrared reflectance spectroscopy study [J].
Lima, A ;
Hahn, F ;
Léger, JM .
RUSSIAN JOURNAL OF ELECTROCHEMISTRY, 2004, 40 (03) :326-336
[6]  
McBreen J, 1999, INTERFACIAL ELECTROCHEMISTRY, P895
[7]   Bifunctionality in Pt alloy nanocluster electrocatalysts for enhanced methanol oxidation and CO tolerance in PEM fuel cells: electrochemical and in situ synchrotron spectroscopy [J].
Mukerjee, S ;
Urian, RC .
ELECTROCHIMICA ACTA, 2002, 47 (19) :3219-3231
[8]   Structure of Pt/Ru catalysts using X-ray absorption near edge structure studies [J].
O'Grady, WE ;
Hagans, PL ;
Pandya, KI ;
Maricle, DL .
LANGMUIR, 2001, 17 (10) :3047-3050
[9]   Platinum-tin alloy electrodes for direct methanol fuel cells [J].
Rahim, MAA ;
Khalil, MW ;
Hassan, HB .
JOURNAL OF APPLIED ELECTROCHEMISTRY, 2000, 30 (10) :1151-1155
[10]   In-situ XAFS fuel cell measurements of a carbon-supported Pt-Ru anode electrocatalyst in hydrogen and direct methanol operation [J].
Roth, C ;
Martz, N ;
Buhrmester, T ;
Scherer, J ;
Fuess, H .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2002, 4 (15) :3555-3557
123