Investigation of ionomer membrane performances and durability for fuel cell application: coupled ex-situ/insitu approach
Abstract
A coupled in-situ/ex-situ approach dedicated to ionomer membranes for PEMFCs has been developed to study their durability, performance and degradation mechanisms. The in-situ approach enables to measure the membrane's performance in fuel cell operation under controlled parameters, and to monitor the performance over the course of targeted Accelerated Stress Test (AST). On the other hand, the membrane is also characterized by ex-situ approach in order to assess its functional properties, but also to better analyze its degradation mechanisms. Ex-situ degradation allows either to decouple the stresses on the membrane (chemical and mechanical stress) and/or to study the synergy between them. This approach is presented through the results of several research projects, focusing on PFSA and sPEEK membranes [8-12]
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