Pore scale modeling of a proton exchange membrane fuel cell catalyst layer: Effects of water vapor and temperature

被引：93

作者：

Lange, Kyle J. ^{[1
]}

Sui, Pang-Chieh ^{[1
]}

Djilali, Ned ^{[1
,2
]}

机构：

[1] Univ Victoria, Inst Integrated Energy Syst, Victoria, BC V8W 2Y2, Canada

[2] Univ Victoria, Dept Mech Engn, Victoria, BC V8W 2Y2, Canada

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 06期

基金：

加拿大自然科学与工程研究理事会;

关键词：

PEM fuel cell; Catalyst layer; Effective transport properties pore scale model; Effective thermal conductivity; DIRECT NUMERICAL-SIMULATION; OXYGEN REDUCTION; PEFC ELECTRODES; CONDUCTIVITY; DIFFUSION; OPTIMIZATION; RECONSTRUCTION; DEPENDENCE; TRANSPORT; KINETICS;

D O I：

10.1016/j.jpowsour.2010.11.118

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A pore scale model of a polymer electrolyte membrane (PEM) fuel cell cathode catalyst layer is developed which accounts for species transport, electrochemical reactions and thermal transport. Effective transport parameters are computed over a range of operating conditions including the effective oxygen diffusivity, effective water vapor diffusivity, effective proton conductivity, effective electron conductivity and the effective thermal conductivity. In addition, the total amount of oxygen consumption is computed for different operating conditions. Finally, a critical assessment of the impact of assumptions made in the absence of detailed morphological data is presented. (c) 2010 Elsevier B.V. All rights reserved.

引用

页码：3195 / 3203

页数：9

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