文献类型：期刊文献

英文题名：Adaptable design of parallel-leaf vein stratified flow field under different inlet and outlet arrangements in PEM fuel cells

作者：Wang, Bin[1,2,3];Pan, Weitong[1,2,3];Hu, Zichao[1,2,3];Tang, Longfei[1,2,3];Chen, Xueli[1,2,3];Wang, Fuchen[1,2,3]

机构：[1]East China Univ Sci & Technol, Inst Clean Coal Technol, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Engn Res Ctr Resource Utilizat Carbon containing W, Minist Educ, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, State Key Lab Coal Liquefact Gasificat & Utilizat, Shanghai 200237, Peoples R China

年份：2025

卷号：533

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20252218534089);WOS:【SCI-EXPANDED(收录号:WOS:001504382600001)】；

基金：The research is supported by Shanghai YangFan Program (24YF2709200) and Fundamental Research Funds for the Central Uni-versity (JKCB1241102) .

语种：英文

外文关键词：Proton exchange membrane fuel cell; Adaptable design; Parallel-leaf vein stratified flow field; Inlet and outlet arrangement; Scale-up

摘要：A well-designed flow field is crucial for the uniformity and output performance of Proton Exchange Membrane (PEM) fuel cells. Nevertheless, both manifold and transition zone designs have remained limitations, and a universal strategy for optimizing uniformity under different inlet and outlet conditions has not been developed. Therefore, a three-dimensional two-phase numerical model of PEM fuel cells is constructed in this work. A novel philosophy-stratified flow field-is proposed, derived from which symmetric half and symmetric Parallel-Leaf Vein Stratified Flow Fields (PLVSFFs) are presented. Firstly, the transfer-reaction characteristics of PLVSFFs are elucidated. The symmetric half and symmetric designs facilitate reactant delivery from one side to the other and from both sides to the center, respectively. Secondly, the effects of different inlet and outlet arrangements, namely Left In-Left Out (LILO), Left in-Right Out (LIRO), and Left-Right In-Left-Right Out (LRILRO), are explored. Low reactant concentrations are observed in the right region, center, and center, respectively. Thirdly, the adaptable design is performed, with symmetric half, symmetric, and symmetric PLVSFFs applied to the three inlet and outlet layouts, respectively. Compared to the PFF, the output performance is enhanced by 30.70%, 8.17%, and 8.14%, while reactant uniformity is improved by 39.89%, 15.15%, and 16.71%, respectively. The drainage capability is also enhanced. The Parallel Flow Field (PFF) and Leaf Vein Flow Field (LVFF) play the roles of fundamental transport and optimized control, respectively. Finally, the superior impacts of this novel stratified flow field are validated via the application under different geometric and operational conditions and the evaluation of net output performance.