Analysis of coupled electron and mass transport in the gas diffusion layer of a PEM fuel cell

被引:50
作者
Sui, P. C. [1 ]
Djilali, N. [1 ]
机构
[1] Univ Victoria, Inst Integrated Energy Syst, Victoria, BC V8W 3P6, Canada
关键词
fuel cell; gas diffusion layer; proton exchange membrane; membrane electrode assembly; conduction; diffusive transport;
D O I
10.1016/j.jpowsour.2006.03.079
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 numerical investigation of the coupled electrical conduction and mass diffusion in the cathodic GDL of a PEMFC is performed using 2D simulations. The current density on the GDL/catalyst layer interface, which constitutes one of the boundary conditions for the GDL domain and reflects the activation overpotential in the catalyst layer and the ohmic loss in the membrane, is solved iteratively using a novel numerical algorithm. A parametric study is performed to investigate the effects on current density distribution of various operating conditions such as oxygen concentration and membrane resistance, and of design factors such as GDL geometry, anisotropic transport properties, and deformation under the land area due to compression. The results show that the current density distribution under the land area can be dominated by either electron transport or mass transport, depending on the operating regime. The analysis of the in-plane current density gradients shows the contributions due to electrical conduction, oxygen diffusion and membrane resistance in an explicit form. The analysis also provides guidance for the scaling of the coupled transport problem. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:294 / 300
页数:7
相关论文
共 17 条
[1]   Three-dimensional computational analysis of transport phenomena in a PEM fuel cell [J].
Berning, T ;
Lu, DM ;
Djilali, N .
JOURNAL OF POWER SOURCES, 2002, 106 (1-2) :284-294
[2]   Analysis of a two-phase non-isothermal model for a PEFC [J].
Birgersson, E ;
Noponen, M ;
Vynnycky, M .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2005, 152 (05) :A1021-A1034
[3]   Modeling the cathode compartment of polymer electrolyte fuel cells: Dead and active reaction zones [J].
Kulikovsky, AA ;
Divisek, J ;
Kornyshev, AA .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1999, 146 (11) :3981-3991
[4]   Verifying predictions of water and current distributions in a serpentine flow field polymer electrolyte membrane fuel cell [J].
Lee, WK ;
Shimpalee, S ;
Van Zee, JW .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2003, 150 (03) :A341-A348
[5]   Three-dimensional model of a complete polymer electrolyte membrane fuel cell - model formulation, validation and parametric studies [J].
Lum, KW ;
McGuirk, JJ .
JOURNAL OF POWER SOURCES, 2005, 143 (1-2) :103-124
[6]  
Mazumder S, 2003, J ELECTROCHEM SOC, V150, pA1503, DOI 10.1149/1.1615608
[7]   Large-scale simulation of polymer electrolyte fuel cells by parallel computing [J].
Meng, H ;
Wang, CY .
CHEMICAL ENGINEERING SCIENCE, 2004, 59 (16) :3331-3343
[8]   Electron transport in PEFCs [J].
Meng, H ;
Wang, CY .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2004, 151 (03) :A358-A367
[9]   Computational model of a PEM fuel cell with serpentine gas flow channels [J].
Nguyen, PT ;
Berning, T ;
Djilali, N .
JOURNAL OF POWER SOURCES, 2004, 130 (1-2) :149-157
[10]   Predicting water and current distributions in a commercial-size PEMFC [J].
Shimpalee, S ;
Greenway, S ;
Spuckler, D ;
Van Zee, JW .
JOURNAL OF POWER SOURCES, 2004, 135 (1-2) :79-87