Identification of liquid water constraints in micro polymer electrolyte fuel cells without gas diffusion layers

被引：19
|
作者：
Seyfang, Bernhard C. [1 ]
Boillat, Pierre [1 ]
Simmen, Franziska [1 ]
Hartmann, Stefan [2 ]
Frei, Gabriel [2 ]
Lippert, Thomas [1 ]
Scherer, Guenther G. [1 ]
Wokaun, Alexander [1 ]
机构：
[1] Paul Scherrer Inst, Res Dept Gen Energy ENE, CH-5232 Villigen, Switzerland
[2] Paul Scherrer Inst, Neutron Imaging & Activat Grp, CH-5232 Villigen, Switzerland
来源：
ELECTROCHIMICA ACTA | 2010年 / 55卷 / 08期
关键词：
Miniaturized polymer electrolyte fuel cell; Neutron radiography; Water accumulation; Limiting current density; Glassy carbon; GLASSY-CARBON; MEMBRANE; LASER; MICROFABRICATION; CHANNELS; FILMS;
D O I：
10.1016/j.electacta.2009.12.061
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A simplified, miniaturized polymer electrolyte fuel cell without gas diffusion layers was investigated under operation by neutron radiography. By visualizing liquid water, it was possible to identify limiting effects, which are directly related to the simplified construction principle. Depending on the operation conditions, undesired water accumulation either in particular micro-channels or on the cathode catalyst layer as well as drying of the anode catalyst layer was observed. As a consequence, the design of a fuel cell without gas diffusion layers must take into account these limitations visualized by neutron radiography. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2932 / 2938
页数：7
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