Thermo‐mechanical phenomena in PEM fuel cells

The experimental and theoretical studying of mechanical effects in running fuel cell is provided. It is shown that under optimized operating conditions it is possible to obtain the electrical performances of fuel cells at about 1 W cm−2. The further improvements can be achieved by means of mechanical effects. In particular, the influence of mechanical properties of seal joints and clamping bolt torques on the electrical performance is studied experimentally. It is demonstrated that rigid seal joints improve the electrical performance in comparison with the soft seal joints. Concerning the influence of the bolt torques, a certain optimal value is found for different types of MEA. The numerical modelling of mechanical stresses in running fuel cell is made. The developed model includes the main components of a real fuel cell (the membrane, the gas diffusion layers, the graphite plates, and the seal joints) and the clamping elements (the steel plates, the bolts, and the nuts). The operating conditions have been taken into account by imposing heat sources and humidity field. The results of modelling illustrate the main mechanical effects arising in the entire fuel cell. Copyright © 2009 John Wiley & Sons, Ltd.

[1]  Jeong L. Sohn,et al.  Some issues on performance analysis of fuel cells in thermodynamic point of view , 2007 .

[2]  Michael Fowler,et al.  Morphological features (defects) in fuel cell membrane electrode assemblies , 2006 .

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

[4]  Junbom Kim,et al.  Study of external humidification method in proton exchange membrane fuel cell , 2004 .

[5]  Chengwei Wu,et al.  Contact resistance prediction and structure optimization of bipolar plates , 2006 .

[6]  Chengwei Wu,et al.  Influence of clamping force on the performance of PEMFCs , 2007 .

[7]  Hyunchul Ju,et al.  A single-phase, non-isothermal model for PEM fuel cells , 2005 .

[8]  D. A. Bograchev,et al.  Stress and plastic deformation of MEA in fuel cells: Stresses generated during cell assembly , 2008 .

[9]  Gen Inoue,et al.  Effect of flow pattern of gas and cooling water on relative humidity distribution in polymer electrolyte fuel cell , 2006 .

[10]  Minggao Ouyang,et al.  Analysis of the water and thermal management in proton exchange membrane fuel cell systems , 2006 .

[11]  Chengwei Wu,et al.  Numerical study on the compression effect of gas diffusion layer on PEMFC performance , 2007 .

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

[13]  W. B. Johnson,et al.  Mechanical response of fuel cell membranes subjected to a hygro-thermal cycle , 2006 .

[14]  W. B. Johnson,et al.  Mechanical behavior of fuel cell membranes under humidity cycles and effect of swelling anisotropy on the fatigue stresses , 2007 .

[15]  James F. Miller,et al.  Key challenges and recent progress in batteries, fuel cells, and hydrogen storage for clean energy systems , 2006 .

[16]  Michael H. Santare,et al.  An experimental investigation of humidity and temperature effects on the mechanical properties of perfluorosulfonic acid membrane , 2006 .

[17]  S. Martemianov,et al.  Performance and instabilities of proton exchange membrane fuel cells , 2006 .

[18]  Michael H. Santare,et al.  Stresses in Proton Exchange Membranes Due to Hygro-Thermal Loading , 2006 .

[19]  J. W. Van Zee,et al.  The effects of compression and gas diffusion layers on the performance of a PEM fuel cell , 1999 .

[20]  Amaël Caillard,et al.  Improvement of proton exchange membrane fuel cell electrical performance by optimization of operating parameters and electrodes preparation , 2007 .