Electrochemical impedance and acoustic emission survey of water desorption in nafion membranes

B. Legros, P. X. Thivel, Y. Bultel, M. Boinet, R. P. Nogueira

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

This study evaluates the acoustic emission (AE) technique for the detection of membrane dehydration in proton exchange membrane fuel cells during operation. The dehydration of the membrane owing to inefficient water management leads to drastic performance losses. Electrochemical impedance spectroscopy (EIS) and AE measurements were carried out during dehydration of Nafion samples. Results have shown that electrochemical parameters obtained from EIS yield monotonic exponential-like responses following the water loss. AE was shown to be sensitive enough to detect structural changes taking place at the last stages of dehydration.

Original languageBritish English
Pages (from-to)B116-B118
JournalElectrochemical and Solid-State Letters
Volume12
Issue number7
DOIs
StatePublished - 2009

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