Improvement of water management by a microporous sublayer for PEM fuel cells

被引:354
作者
Qi, ZG [1 ]
Kaufman, A [1 ]
机构
[1] H Power Corp, Belleville, NJ 07109 USA
关键词
microporous; sublayer; carbon paper; catalyst layer; PEM fuel cells;
D O I
10.1016/S0378-7753(02)00058-7
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
A microporous PTFE/carbon sublayer between the carbon paper and the catalyst layer played a crucial role in PEM fuel cells. Such a layer reduced the difference among different carbon paper types made by different manufacturers or by the same manufacturer at different times. When such a sublayer was present, the carbon paper seemed to function merely as a support that provided the mechanical strength for the sublayer. A sublayer was extremely useful if the carbon paper was prone to flooding. Sublayers of different thickness containing 24, 35 and 45% PTFE were tested. A four-cell stack could operate stably at a current density of 145 mA/cm(2) using unhumidified air and hydrogen when sublayered carbon paper was employed. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:38 / 46
页数:9
相关论文
共 11 条
[1]   Influence of the PTFE content in the diffusion layer of low-Pt loading electrodes for polymer electrolyte fuel cells [J].
Giorgi, L ;
Antolini, E ;
Pozio, A ;
Passalacqua, E .
ELECTROCHIMICA ACTA, 1998, 43 (24) :3675-3680
[2]   Diffusion layer parameters influencing optimal fuel cell performance [J].
Jordan, LR ;
Shukla, AK ;
Behrsing, T ;
Avery, NR ;
Muddle, BC ;
Forsyth, M .
JOURNAL OF POWER SOURCES, 2000, 86 (1-2) :250-254
[3]  
KAUFMAN A, 1998, Patent No. 5776625
[4]  
Kinoshita K., 1988, CARBON, P46
[5]  
Paganin VA, 1996, J APPL ELECTROCHEM, V26, P297, DOI 10.1007/BF00242099
[6]   INFLUENCE OF THE WATER-CONTENT ON THE KINETICS OF COUNTERION TRANSPORT IN PERFLUOROSULFONIC MEMBRANES [J].
POURCELLY, G ;
OIKONOMOU, A ;
GAVACH, C ;
HURWITZ, HD .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1990, 287 (01) :43-59
[7]   MODELING AND EXPERIMENTAL DIAGNOSTICS IN POLYMER ELECTROLYTE FUEL-CELLS [J].
SPRINGER, TE ;
WILSON, MS ;
GOTTESFELD, S .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1993, 140 (12) :3513-3526
[8]  
Voss HH, 1995, Method and apparatus for removing water from electrochemical fuel cells by controlling the temperature and pressure of the reactant streams, Patent No. [US5441819, 5441819]
[9]   MANAGEMENT OF THE WATER-CONTENT IN POLYMER ELECTROLYTE MEMBRANES WITH POROUS FIBER WICKS [J].
WATANABE, M ;
SATOH, Y ;
SHIMURA, C .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1993, 140 (11) :3190-3193
[10]   PREPARATION OF A HIGH-PERFORMANCE GAS-DIFFUSION ELECTRODE [J].
WATANABE, M ;
TOMIKAWA, M ;
MOTOO, S .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1985, 182 (01) :193-196