Investigation of water evolution and transport in fuel cells with high resolution synchrotron x-ray radiography

被引：299
|
作者：
Manke, I. [1 ]
Hartnig, Ch.
Gruenerbel, M.
Lehnert, W.
Kardjilov, N.
Haibel, A.
Hilger, A.
Banhart, J.
Riesemeier, H.
机构：
[1] Tech Univ Berlin, Inst Mat Sci & Technol, D-10623 Berlin, Germany
[2] Ctr Solar Energy & Hydrogen Res, D-89081 Ulm, Germany
[3] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany
[4] Fed Inst Mat Res & Testing, D-12205 Berlin, Germany
来源：
APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 17期
关键词：
D O I：
10.1063/1.2731440
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The authors report on in situ investigations of liquid water evolution and transport in an undisturbed operating fuel cell at the microscopic level. Synchrotron x-ray radiography enhances the spatial resolution by two orders of magnitude compared to the state-of-the-art techniques in this field. The primary spots of liquid water formation, their growth, and transport inside the porous gas diffusion material were analyzed; correlations between operating conditions and the dynamics of droplet formation are described. Previous findings from modeling and simulation approaches are confirmed and the applicability for the description of in situ processes of a recently proposed model has been proven. (c) 2007 American Institute of Physics.
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页数：3
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