Conference Papers Year : 2024

Investigation of ionomer membrane performances and durability for fuel cell application: coupled ex-situ/insitu approach

Abstract

It is well known that the reference ionomer used in low-temperature proton exchange membrane fuel cells (PEMFC) is perfluorosulfonic acid (PFSA). This ionomer has been the subject of numerous studies highlighting its degradation mechanisms [1-7]. Despite many improvements, the degradation of PFSA membrane is still one of the factors holding back the large-scale deployment of PEMFC. Therefore, it remains important to progress in the understanding of the degradation mechanisms occurring during fuel cell operation, which are not fully understood yet and may be challenged as membrane formulations, membrane/electrode assemblies, and operating conditions evolve.

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]

Abstract_ICGH2024_LEMTA_Characterization of membrane for PEMFC_A. El kaddouri.pdf (189) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-04885368 , version 1 (14-01-2025)

Identifiers

  • HAL Id : hal-04885368 , version 1

Cite

Assma El Kaddouri, Mylène Robert, Meriem Daoudi, Guillaume Etienne, Jean-Christophe Perrin, et al.. Investigation of ionomer membrane performances and durability for fuel cell application: coupled ex-situ/insitu approach. International conference on green hydrogen, Dec 2024, Rabat, Morocco. ⟨hal-04885368⟩
0 View
0 Download

Share

More