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Degradation of Polymer Electrolyte Membranes

  • Alan Jones
  • Jaya Malladi
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

Premature failure of polymer electrolyte membranes used in proton exchange membrane fuel cells result in short life and degradation of performance of the fuel cell stack. Changes in the humidity and temperature cause swelling and shrinking of the membrane which result is stresses in the membrane. Stress relaxation and changes in conductivity will occur in the membrane. A novel experimental facility which allows the control of humidity, temperature, load or strain and the simultaneous measurement of the proton impedance has been developed and used to measure the stress relaxation and associated changes in conductivity of Nafion membranes. It was found that at constant strain, both stress relaxation and a drop in the conductivity of the membrane occurs.

Keywords

Fuel Cell Polymer Electrolyte Stress Relaxation Proton Exchange Membrane Fuel Cell Polymer Electrolyte Membrane 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Businees Media, LLC 2011

Authors and Affiliations

  1. 1.Advanced Materials Laboratory, Department of Mechanical EngineeringIndiana University – Purdue University IndianapolisIndianapolisUSA

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