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Electron Spin Resonance Study of Fuel Cell Polymer Membrane Degradation
Authors:Alexander Panchenko  Elena Aleksandrova  Emil Roduner
Abstract:
The long term stability of the membrane is an important factor limiting the fuel cell lifetime. During extended use the membrane degrades, probably via reaction with hydroxyl and superoxide radicals which are regular intermediates of the oxygen reduction at the cathode. Only extremely stable membranes can withstand the aggressive chemical and physical environment in an operating fuel cell. Within a given set of operating conditions, intrinsic chemical and mechanical properties of the membrane as well as its water content impact its durability dramatically.
Keywords:fuel cell polymer membrane  degradation  electron spin resonance
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