交指型流场结构的质子交换膜燃料电池温度分布特性模拟

Modeling of Temperature Distribution Characteristics in Proton Exchange Membrane Fuel Cell with Interdigitated Flow Field

质子交换膜燃料电池的温度分布对燃料电池性能特别是输出电流密度有重要的影响,交指型结构流场有效地提高了输出电流密度。本文对交指型流场结构的质子交换膜燃料电池的温度分布进行了研究,对交指型流场结构的质子交换膜燃料电池在电池横贯方向、阳极催化层、膜中心和阴极催化层进行了计算分析,得出了温度分布规律。研究了输出电压分别为0.4、0.6、0.8 V时电流密度变化对流场温度的影响、进出气通道和岸下对应膜的温差,得出了工作电压变化时膜的温度分布规律。

Temperature distribution of the proton exchange membrane fuel cell（PEMFC） takes a important influence on the cells＇ performance especially on current density, and the interdigitated flow field helps to enhance current density.The temperature distribution of PEMFC with interdigitated flow field was investigated,by simulation method at traverse direction,anode catalysis layer,membrane center and cathode catalysis layer,to obtain the rule of temperature distribution.The influences of current density variation on flow field temperature at the voltages of 0.4,0.6,0.8 V and the temperature differences of membrane at inlet and outlet channels,shoulders were investigated to obtain temperature distribution rules of membrane at the different voltages.