Spatially resolved characterization of PEFCs using simultaneously neutron radiography and locally resolved impedance spectroscopy

被引：85

作者：

Schneider, IA ^{[1
]}

Kramer, D ^{[1
]}

Wokaun, A ^{[1
]}

Scherer, GG ^{[1
]}

机构：

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

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2005年 / 7卷 / 12期

关键词：

impedance spectroscopy; neutron radiography; segmented cell; PEFC; water management; flooding;

D O I：

10.1016/j.elecom.2005.09.017

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A method for performing neutron radiography and locally resolved impedance spectroscopy simultaneously in Situ in all operating polymer electrolyte fuel cell (PEFC) is presented. The new method provides Concurrently spatially resolved information about the local cell performance, the locally limiting processes, and the liquid water distribution. Information about the impact of water oil cell performance and limiting processes call be gained in situ oil a local scale in all operating PEFC. The method was applied to a PEFC operated oil pure H-2/O-2 in co-flow mode under low humidity operating conditions. The results show that in co-flow mode strong flooding and severe drying can Occur at the very same time in different sections of a PEFC. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：1393 / 1397

页数：5

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