摘要
为了研究流道结构对电池氢气氧气流动和对催化层上电池电流密度分布的影响,分析单排孔流道结构和单双排交错孔流道结构对电池的影响,通过使用COMSOL Multiphsics建立不同流道结构的电池三维模型并进行数值模拟,得到催化层上氢气分布和电流密度分布以及气体扩散层内侧流场分布。结果表明,提出的带孔结构提高了氢气和氧气的渗透,氢气流动方向和渗流方向的速度都得到了提高,加快内部物质的传递;另一方面,提高了电池的性能且反应层上的电流密度分布比原直流道更均匀,差值更小。
In order to study the influence of flow channel structure on hydrogen and oxygen flow and current density distribution of the cell on the catalytic layer,the influence of single-row and single and double rows of cross-hole channel structure on the cell was analyzed.By using COMSOL Multiphsics to build the three-dimensional model of the cell with different flow channel structure and carry out numerical simulation,the distribution of hydrogen and current density on the catalytic layer and the distribution of the flow field on the inner side of the gas diffusion layer were obtained.The results show that the perforated structures can improve the penetration of hydrogen and oxygen,and the velocity of hydrogen flow direction and seepage direction,accelerate the internal material transfer;on the other hand,the perforated structures improve the performance of the cell,and the current density distribution on the reaction layer is more uniform than the straight channel,the difference is smaller.
作者
张贝贝
李培超
Zhang Beibei;Li Peichao(School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science,Shanghai 201620,China)
出处
《农业装备与车辆工程》
2021年第10期21-26,共6页
Agricultural Equipment & Vehicle Engineering
基金
上海市自然科学基金项目(19ZR1421400)。
