Dynamic model of solid polymer fuel cell water management

被引:61
作者
van Bussel, HPLH [1 ]
Koene, FGH [1 ]
Mallant, RKAM [1 ]
机构
[1] Netherlands Energy Res Fdn, ECN, NL-1755 ZG Petten, Netherlands
关键词
solid polymer fuel cell; polymer electrolyte membrane; fuel cell; dynamic; two-dimensional; water management;
D O I
10.1016/S0378-7753(97)02744-4
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
For system simplicity, it is advantageous to operate the solid polymer fuel cell on dry gases at low overpressures. Under these conditions, water management inside the cell is a critical issue. To determine the effect of operating conditions on performance, a two-dimensional dynamic model is developed. Water balance equations are written for each membrane element taking into account: production, drag and diffusion of water in the membrane, and diffusion of water vapour in the gas diffusion layers. The model can reasonably reproduce the polarisation curves of a cell operated on various oxygen fractions and can qualitatively describe the effect of various operating conditions (dry gases, current density level, co- and counter-flow, anode recirculation). (C) 1998 Elsevier Science S.A.
引用
收藏
页码:218 / 222
页数:5
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