Effects of membrane electrode assembly preparation on the polymer electrolyte membrane fuel cell performance

被引:150
作者
Frey, T
Linardi, M
机构
[1] Ctr Solar Energy & Hydrogen Res Baden Wuerttember, ZSW, Div Electrochem Energy Storage & Convers 3, D-89081 Ulm, Germany
[2] IPEN CNEN SP, Ctr Mat Sci & Technol, Sao Paulo, Brazil
基金
巴西圣保罗研究基金会;
关键词
fuel cell; PEMFC; membrane electrode assembly; preparation procedure;
D O I
10.1016/j.electacta.2004.07.017
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
This paper presents results of recent investigations to develop an optimized in-house membrane electrode assembly (MEA) preparation technique combining catalyst ink spraying and assembly hot pressing. Only easy steps were chosen in this preparation technique in order to simplify the method, aiming at cost reduction. The influence of MEA fabrication parameters like electrode pressing or annealing on the performance of hydrogen fuel cells was studied by single cell measurements with H-2/O-2 operation. Toray paper and carbon cloth as gas diffusion layer (GDL) materials were compared and the composition of electrode inks was optimized with regard to most favorable fuel cell performance. Commercial E-TEK catalyst was used on the anode and cathode with Pt loadings of 0.4 and 0.6 mg/cm(2), respectively. The MEA with best performance delivered approximately 0.58 W/cm(2), at 65 degreesC cell temperature, 80 degreesC anode humidification, dry cathode and ambient pressure on both electrodes. The results show, that changing electrode compositions or the use of different materials with same functionality (e.g. different GDLs), have a larger effect on fuel cell performance than changing preparation parameters like hot pressing or spraying conditions, studied in previous work. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码:99 / 105
页数:7
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