The Impact of Micro Porous Layer on Liquid Water Evolution inside PEMFC using Lattice Boltzmann Method

被引:21
|
作者
Sepe, M. [1 ]
Satjaritanun, P. [2 ]
Zenyuk, I. V. [2 ]
Tippayawong, N. [3 ]
Shimpalee, S. [1 ,3 ]
机构
[1] Univ South Carolina, Dept Chem Engn, Columbia, SC 29208 USA
[2] Univ Calif Irvine, Natl Fuel Cell Res Ctr, Dept Chem Engn & Mat Sci, Irvine, CA USA
[3] Chiang Mai Univ, Dept Mech Engn, Chiang Mai, Thailand
关键词
Gas Diffusion Layer; Microporous Layer; Proton Exchange Membrane Fuel Cells; Liquid Transport; Lattice Boltzmann Method; GAS-DIFFUSION-LAYER; FUEL-CELL; FLOW-FIELD; TRANSPORT; COMPRESSION; SIMULATION; DESIGNS; MODEL;
D O I
10.1149/1945-7111/ac154e
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Proton exchange membrane fuel cells (PEMFCs) require a gas diffusion layer to aid in fuel transport to the catalyst sites. A microporous layer (MPL) is often added to the GDL to improve liquid saturation inside gas diffusion media. In this work, the lattice Boltzmann method was applied to four GDL samples with the addition of an MPL. Three injection orientations were used to study liquid evolution through the samples. Each orientation used four different injection pressures, ranging from 5,000 Pa to 8,000 Pa. Saturation data for GDL samples with and without an MPL were compared. Results showed that when adding an MPL, liquid tends to distribute laterally under the MPL until pressure is reached to allow liquid to travel through the cracks of the MPL surface and into the GDL geometry. A more uniform saturation distribution across the sample is seen when comparing both types of GDLs. The outcomes of this work will help research that requires knowledge of the internal liquid transport through gas diffusion media for PEMFC application.
引用
收藏
页数:11
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