期刊
ELECTROCHIMICA ACTA
卷 188, 期 -, 页码 317-326出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.11.139
关键词
Proton exchange membrane electrolyzer cell; liquid/gas diffusion layer properties; capillary pressure; two-phase transport; performance modeling
资金
- U.S. Department of Energy's National Energy Technology Laboratory [DE-FE0011585]
- Center for Nanophase Materials Sciences
- Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy
A mathematical model is developed to simulate the two-phase transport behaviors and the performance in a proton exchange membrane electrolyzer cell (PEMEC). The parameter effects of the liquid/gas diffusion layer (LGDL), including contact angle, porosity, and pore size, on the capillary flow and liquid water distribution are comprehensively studied. In addition, the effects of the LGDL pore size and membrane humidity on the performance and efficiency of PEMEC are also investigated. The results indicate that LGDL properties have significant impacts on its capillary pressure and liquid water distribution, which consequently affects the two-phase transport and performance in the PEMEC. Increasing the porosity and/or pore size or decreasing the contact angle can enhance the liquid water saturation along the LGDL thickness direction, and consequently improve the performance and efficiency of PEMEC. The variation of PEM humidity contributes to a portion of the cell ohmic loss as well. (C) 2015 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据