In situ observation of the water distribution across a PEFC using high resolution neutron radiography

被引：217

作者：

Boillat, P. ^{[1
]}

Kramer, D. ^{[1
]}

Seyfang, B. C. ^{[1
]}

Frei, G. ^{[2
]}

Lehmann, E. ^{[2
]}

Scherer, G. G. ^{[1
]}

Wokaun, A. ^{[1
]}

Ichikawa, Y. ^{[3
]}

Tasaki, Y. ^{[3
]}

Shinohara, K. ^{[3
]}

机构：

[1] Paul Scherrer Inst, Electrochem Lab, CH-5232 Villigen, Switzerland

[2] Paul Scherrer Inst, Spallat Neutron Source Div ASQ, CH-5232 Villigen, Switzerland

[3] Nissan Motor Co Ltd, Yokosuka, Kanagawa, Japan

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2008年 / 10卷 / 04期

关键词：

fuel cell; neutron radiography; high resolution; water management;

D O I：

10.1016/j.elecom.2008.01.018

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The water distribution across the membrane electrolyte assembly (MEA) of a working polymer electrolyte fuel cell (PEFC) was observed in situ using neutron radiography. In order to resolve the distribution between the different layers of the MEA, in plane imaging (cell membrane parallel to the beam) was used. Unprecedented spatial resolution for neutron radiography was obtained using a new detector system available at PSI combined with specific anisotropic resolution enhancement methods. A detrimental effect on performance of excessive water content in the cathode GDL was observed. Depending on the operating condition, a strong separation of the water content between ribs and channel was observed, particularly in the cathode GDL. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：546 / 550

页数：5

共 20 条

[1] Neutron imaging technique for in situ measurement of water transport gradients within Nafion in polymer electrolyte fuel cells [J].