Visualization of water buildup in the cathode of a transparent PEM fuel cell

被引:553
作者
Tüber, K [1 ]
Pócza, D [1 ]
Hebling, C [1 ]
机构
[1] Fraunhofer Inst Solar Energy Syst, D-79110 Freiburg, Germany
关键词
PEMFC; two-phase flow; water transport; cathode flooding; diffusion layer; mathematical model;
D O I
10.1016/S0378-7753(03)00797-3
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
Two-phase flow and transport of reactants and products in the cathode of a transparent proton exchange membrane fuel cell (PEMFC) are studied experimentally. Images of water formed inside the cathode gas channels are presented to explain the phenomenon of water flooding. Effects of air stoichiometry, temperature, air humidity and different characteristics of diffusion layers are discussed. The influence of hydrophobic and hydrophilic diffusion layers compared to standard carbon papers on water transport is investigated. Mathematical verification of a threshold current density corresponding to first appearance of liquid water at the membrane/cathode interface confirms the experimental results. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:403 / 414
页数:12
相关论文
共 39 条
[1]   Carbon dioxide evolution patterns in direct methanol fuel cells [J].
Argyropoulos, P ;
Scott, K ;
Taama, WM .
ELECTROCHIMICA ACTA, 1999, 44 (20) :3575-3584
[2]   Modelling of polymer electrolyte membrane fuel cells with variable degrees of water flooding [J].
Baschuk, JJ ;
Li, XH .
JOURNAL OF POWER SOURCES, 2000, 86 (1-2) :181-196
[3]   A MATHEMATICAL-MODEL OF THE SOLID-POLYMER-ELECTROLYTE FUEL-CELL [J].
BERNARDI, DM ;
VERBRUGGE, MW .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1992, 139 (09) :2477-2491
[4]   Examination of the influence of PTFE coating on the properties of carbon paper in polymer electrolyte fuel cells [J].
Bevers, D ;
Rogers, R ;
vonBradke, M .
JOURNAL OF POWER SOURCES, 1996, 63 (02) :193-201
[5]   Operating proton exchange membrane fuel cells without external humidification of the reactant gases - Fundamental aspects [J].
Buchi, FN ;
Srinivasan, S .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (08) :2767-2772
[6]   Water transport in polymer membranes for PEMFC [J].
Choi, KH ;
Peck, DH ;
Kim, CS ;
Shin, DR ;
Lee, TH .
JOURNAL OF POWER SOURCES, 2000, 86 (1-2) :197-201
[7]   Polymer electrolyte membrane fuel cells for communication applications [J].
Chu, D ;
Jiang, R ;
Gardner, K ;
Jacobs, R ;
Schmidt, J ;
Quakenbush, T ;
Stephens, J .
JOURNAL OF POWER SOURCES, 2001, 96 (01) :174-178
[8]   Influence of heat transfer on gas and water transport in fuel cells [J].
Djilali, N ;
Lu, DM .
INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2002, 41 (01) :29-40
[9]   Fuel cells for portable applications [J].
Dyer, CK .
JOURNAL OF POWER SOURCES, 2002, 106 (1-2) :31-34
[10]   Influence of the PTFE content in the diffusion layer of low-Pt loading electrodes for polymer electrolyte fuel cells [J].
Giorgi, L ;
Antolini, E ;
Pozio, A ;
Passalacqua, E .
ELECTROCHIMICA ACTA, 1998, 43 (24) :3675-3680