Development of a planar micro fuel cell with thin film and micro patterning technologies

被引:107
作者
Hahn, R
Wagner, S
Schmitz, A
Reichl, H
机构
[1] Fraunhofer Inst Reliabil & Microintegrat, D-13355 Berlin, Germany
[2] Fraunhofer Inst Solar Energy Syst, D-7800 Freiburg, Germany
关键词
micro fuel cell; membrane electrode assembly patterning; foil technology; microstructures;
D O I
10.1016/j.jpowsour.2004.01.015
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Technologies for wafer level fabrication of planar PEM fuel cells between I mm(2) and approximately I cm(2) were developed. These MEMS-based micro fuel cells may be potential power sources for future applications such as wireless sensor networks, chip cards or autonomous rnicrosystems. The investigations focused on pattering technologies for the fabrication of micro flow fields, design studies for integrated flow fields, material compatibility for fuel cells, patterning of membrane electrodes, serial interconnection of single cells in a planar arrangement, laminating and assembling processes. Although wafer technologies were applied, foil materials were used which allow low-cost fabrication in future production. Prototypes of self-breathing PEM fuel cells with a size of I cm x I cm and 200 mum thickness were fabricated. V/I curves were measured at a variety of ambient conditions. Stable operation was achieved at 80 mW/cm(2) at varying ambient conditions with dry hydrogen fuel. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:73 / 78
页数:6
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