文献类型：期刊文献

英文题名：Structural optimization of distribution zone for large-sized PEMFC with high power density

作者：Lu, Wenxuan[1];Pan, Weitong[1];Chen, Zhekun[1];Gao, Yunfei[1,2];Ding, Lu[1,2];Chen, Xueli[1];Wang, Fuchen[1]

机构：[1]East China Univ Sci & Technol, Inst Clean Coal Technol, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2023

卷号：276

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20231914068931);WOS:【SCI-EXPANDED(收录号:WOS:001007183300001)】；

基金：This work was supported by Shanghai Yangfan Program (22YF1410300) , Shanghai Chenguang Program (21CGA35) and National Natural Science Foundation of China (22208104) .

语种：英文

外文关键词：Proton exchange membrane fuel cell; Distribution zone; Three-dimensional numerical simulation; High power density; Uniform distribution of flow

摘要：Proton exchange membrane fuel cell (PEMFC) is an important device to convert clean-fuel hydrogen into electricity, which has the potential to reduce pollutant emission and our dependence on fossil fuels. Of the many development and manufacturing challenges that need to overcome before large-scale commercialization can be realized, one of the most pivotal ones is flow distribution uniformity. To this end, a distribution zone with partially dotted matrix was proposed, and showed much more effectiveness when compared with the unoptimized distribution zone with an empty chamber. The positional and size effect of the dotted matrix was investigated, and results showed that flow uniformity was maximized when the dotted matrix was placed near the gas inlet. Interestingly, less dotted matrix size could achieve better performance, indicating the potential of this approach to reduce manufacturing cost. The optimized system could achieve more uniform flow with standard deviation of 1.808 x 10-8, maldistribution factor of 3.967 x 10-3 and variable coefficient of 0.4143%, more superior to other similar models reported. Furthermore, a full cell-level simulation was also conducted, affirming the superiority of the proposed model with increased power densities and water distribution uniformities.