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PILs‐based Nafion membranes: a route to high‐temperature PEFMCs dedicated to electric and hybrid vehicles
Author(s) -
Iojoiu Cristina,
Martinez Mathieu,
Hanna Maha,
Molmeret Yannick,
Cointeaux Laure,
Leprêtre JeanClaude,
Kissi Nadia El,
Guindet Jacques,
Judeinstein Patrick,
Sanchez JeanYves
Publication year - 2008
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1219
Subject(s) - nafion , membrane , proton exchange membrane fuel cell , anhydrous , conductivity , chemical engineering , materials science , polymer chemistry , polymer , relative humidity , electrode , proton , diamine , chemistry , composite material , organic chemistry , electrochemistry , engineering , physics , thermodynamics , biochemistry , quantum mechanics
This paper deals with the performance of anhydrous proton‐conducting polymers obtained by blending modified Nafion® membranes with proton conducting ionic liquids (PILs). It has been shown that the conductivities depend more on the PIL uptake than on its intrinsic conductivity. Conductivities at 130°C approaching those of current Nafion membranes at 80°C and 98% relative humidity were obtained with the best blends. These data allow considering MEA operating at 120–130°C based on membrane and electrodes incorporating these blends. This is clearly a positive feature for an implementation in hybrid vehicles powered by proton exchange membrane fuel cells (PEMFCs) operating above 100°C. Lastly, preliminary results for a PIL based on a half‐neutralized diamine show an improvement in oxidation and, provided that the neutralization is optimized, a neat reinforcement of the Nafion membrane can be expected. Copyright © 2008 John Wiley & Sons, Ltd.