PEM燃料电池接触压力和电化学性能的研究  

STUDY ON CONTACT PRESSURE AND ELECTROCHEMICAL PERFORMANCE OF PEM FUEL CELL

作　　者：韩雪梅[1] 谈金祝[1] 刘永昌[1] 李朋[1] 潘龙[1] 

机构地区：[1]南京工业大学机械与动力工程学院,南京211816

出　　处：《太阳能学报》2016年第11期2978-2982,共5页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51175241);江苏省"六大人才高峰"高层次人才选拔培养资助项目;江苏省普通高校研究生实践创新计划(SJLX_0331)

摘　　要：考虑质子交换膜(PEM)燃料电池组装力和工作温度耦合作用对燃料电池双极板与气体扩散层(GDL)间接触压力和电化学性能的影响,采用有限元分析(finite element analysis,FEA)与实验相结合的方法对其进行研究。结果表明,组装力和温度对气体扩散层和双极板之间的接触压力有明显的影响。同时采用实验的方法研究组装力和温度对燃料电池电化学性能的影响,结果表明,当组装力为3.0 Nm和燃料电池温度为80℃时,燃料电池接触压力分布最均匀,电化学性能最优。实验结果与模拟结果吻合较好。Considering the coupling effects of assembly force and operating temperature on contact pressure and electrochemical performance, the experimental and finite element methods are used in this paper. The finite element analysis （FEA）results reveal that the coupling assembly force and temperature have a significant impact on the contact pressure between gas diffusion layer（GDL）and bipolar plate. In addition, the electrochemical experiment is conducted to study the effect of assembly force and temperature on the electrochemical performance of the PEM fuel cell. It is found that the contact pressure distribution between GDL and dipolar plate have the best uniformity and there exists the optimum electrochemical performance both under the applied assembly force of 3.0 Nm and at the temperature of 80 ℃ in this work. The experimental results are in good agreement with the FEA results.

关 键 词：质子交换膜燃料电池 双极板 气体扩散层 接触压力 电化学性能 

分 类 号：TM911.4[电气工程—电力电子与电力传动]