PEMFC阴极催化层的LBM模拟  

Simulation of PEMFC cathode catalyst layer using LBM

作　　者：陈黎[1] 栾辉宝[1] 陶文铨[1] 

机构地区：[1]西安交通大学能源与动力工程学院动力工程多相流国家重点实验室,陕西西安710049

出　　处：《电源技术》2009年第9期794-797,共4页Chinese Journal of Power Sources

基　　金：国家自然科学重点基金资助项目(50636050)

摘　　要：采用格子-Boltzmann方法(LBM)直接从介观层次数值模拟了质子交换膜燃料电池(PEMFC)阴极催化层的传质和电化学反应过程。开发了二维程序;为了验证所编程序的正确性,建立了一个理想的二维规则模型,模拟得到的极化曲线和已有文献的极化曲线吻合较好。处理PEMFC阴极催化层的电镜扫描图得到了二维实际计算模型,应用LBM模拟得到了二维的O2浓度和电势分布。表明LBM是一有效的分析PEMFC阴极催化层中传递和电化学反应过程的数值模拟方法。In this work, the Lattice Boltzmann Method （LBM） was applied to the simulation of mass transport and electrochemical reaction in a proton exchange membrane fuel cell （PEMFC） cathode catalyst layer. 2 D program was developed and then an idealized 2 D regular model was established to validate the program. Polarization curves from simulation show a good agreement with the results from literature. Then, LBM was applied directly on a 2 D practical microstructure established from SEM image of a PEMFC cathode catalyst layer. 2 D distribution of oxygen concentration and potential was obtained. From the results of this simulation the LBM can be considered as a promising numerical scheme to analyze mass transport and electrochemical reaction in PEMFC cathode catalyst layer.

关 键 词：质子交换膜燃料电池 阴极催化层 格子-BOLTZMANN方法 介观模拟 

分 类 号：TM911.4[电气工程—电力电子与电力传动]