Effects of electrode wettabilities on liquid water behaviours in PEM fuel cell cathode

Abstract Liquid water transport is one of the key challenges for water management in a proton exchange membrane (PEM) fuel cell. Investigation of the air–water flow patterns inside fuel cell gas flow channels with gas diffusion layer (GDL) would provide valuable information that could be used in fuel cell design and optimization. This paper presents numerical investigations of air–water flow across an innovative GDL with catalyst layer and serpentine channel on PEM fuel cell cathode by use of a commercial Computational Fluid Dynamics (CFD) software package FLUENT. Different static contact angles (hydrophilic or hydrophobic) were applied to the electrode (GDL and catalyst layer). The results showed that different wettabilities of cathode electrode could affect liquid water flow patterns significantly, thus influencing on the performance of PEM fuel cells. The detailed flow patterns of liquid water were shown, several gas flow problems were observed, and some useful suggestions were given through investigating the flow patterns.

[1]  Chao-Yang Wang,et al.  Large-scale simulation of polymer electrolyte fuel cells by parallel computing , 2004 .

[2]  Hongtan Liu,et al.  A two-phase flow and transport model for the cathode of PEM fuel cells , 2002 .

[3]  James Larminie,et al.  Fuel Cell Systems Explained , 2000 .

[4]  Xianguo Li,et al.  A flow channel design procedure for PEM fuel cells with effective water removal , 2007 .

[5]  Hua Meng,et al.  A two-phase non-isothermal mixed-domain PEM fuel cell model and its application to two-dimensional simulations , 2007 .

[6]  Chao-Yang Wang,et al.  A Nonisothermal, Two-Phase Model for Polymer Electrolyte Fuel Cells , 2006 .

[7]  Chaoyang Wang,et al.  Nonisothermal Modeling of Polymer Electrolyte Fuel Cells II. Parametric Study of Low-Humidity Operation , 2006 .

[8]  T. Nguyen,et al.  A liquid water management strategy for PEM fuel cell stacks , 2003 .

[9]  Biao Zhou,et al.  Water behavior in serpentine micro-channel for proton exchange membrane fuel cell cathode , 2005 .

[10]  Hyunchul Ju,et al.  Experimental Validation of a PEM Fuel Cell Model by Current Distribution Data , 2004 .

[11]  Chao-Yang Wang,et al.  Model of Two-Phase Flow and Flooding Dynamics in Polymer Electrolyte Fuel Cells , 2005 .

[12]  Jin Hyun Nam,et al.  Effective diffusivity and water-saturation distribution in single- and two-layer PEMFC diffusion medium , 2003 .

[13]  Chao-Yang Wang,et al.  Fundamental models for fuel cell engineering. , 2004, Chemical reviews.

[14]  E. Passalacqua,et al.  Modeling of porous membranes for molten carbonate fuel cells , 1997 .

[15]  H. Chu,et al.  Effects of cathode humidification on the gas-liquid interface location in a PEM fuel cell , 2006 .

[16]  Biao Zhou,et al.  Liquid water transport in straight micro-parallel-channels with manifolds for PEM fuel cell cathode , 2006 .

[17]  Jung S. Yi,et al.  Water management along the flow channels of PEM fuel cells , 2004 .

[18]  A. A. Kulikovsky,et al.  Numerical simulation of a new operational regime for a polymer electrolyte fuel cell , 2001 .

[19]  Ned Djilali,et al.  Analysis of coupled proton and water transport in a PEM fuel cell using the binary friction membrane model , 2006 .

[20]  Chaoyang Wang,et al.  Two-Phase Modeling and Flooding Prediction of Polymer Electrolyte Fuel Cells , 2005 .

[21]  S. Dutta,et al.  Three-dimensional numerical simulation of straight channel PEM fuel cells , 2000 .

[22]  Thomas A. Trabold,et al.  In situ investigation of water transport in an operating PEM fuel cell using neutron radiography: Part 1 – Experimental method and serpentine flow field results , 2006 .

[23]  Feng-Yuan Zhang,et al.  Liquid Water Removal from a Polymer Electrolyte Fuel Cell , 2006 .

[24]  Z. H. Wang,et al.  Two-phase flow and transport in the air cathode of proton exchange membrane fuel cells , 2000 .

[25]  Suresh G. Advani,et al.  Experimental investigation of liquid water formation and transport in a transparent single-serpentine PEM fuel cell , 2007 .

[26]  Yair Ein-Eli,et al.  PEM FC with improved water management , 2006 .

[27]  Chao-Yang Wang,et al.  Ultra large-scale simulation of polymer electrolyte fuel cells , 2006 .

[28]  T. Nguyen,et al.  Two-phase flow model of the cathode of PEM fuel cells using interdigitated flow fields , 2000 .

[29]  L. B. Wang,et al.  Numerical simulation of a new water management for PEM fuel cell using magnet particles deposited in the cathode side catalyst layer , 2002 .

[30]  Chaoyang Wang,et al.  Visualization of Liquid Water Transport in a PEFC , 2004 .

[31]  Suk Won Cha,et al.  The scaling behavior of flow patterns: a model investigation , 2004 .

[32]  Chao-Yang Wang,et al.  Two-phase transport and the role of micro-porous layer in polymer electrolyte fuel cells , 2004 .

[33]  Biao Zhou,et al.  Innovative gas diffusion layers and their water removal characteristics in PEM fuel cell cathode , 2007 .

[34]  Loreto Daza,et al.  Optimisation of flow-field in polymer electrolyte membrane fuel cells using computational fluid dynamics techniques , 2000 .

[35]  Biao Zhou,et al.  Liquid water transport in parallel serpentine channels with manifolds on cathode side of a PEM fuel cell stack , 2006 .

[36]  Jürgen Mergel,et al.  Interaction between the diffusion layer and the flow field of polymer electrolyte fuel cells—experiments and simulation studies , 2003 .

[37]  Chao-Yang Wang,et al.  Computational Fluid Dynamics Modeling of Proton Exchange Membrane Fuel Cells , 2000 .