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Poly(ether sulfone)–sulfonated poly(ether ether ketone) blend ultrafiltration/nanofiltration-based proton-conductive membranes with improved performance for H2/Cl2fuel cell application
Li Zhou,Zhigang Shao,Baolian Yi
Journal of Materials Chemistry Pub Date : 08/09/2012 00:00:00 , DOI:10.1039/C2JM33804A
Abstract

A new blend ultrafiltration (UF)/nanofiltration (NF)-based proton-conductive membrane, which comprised poly(ether sulfone) (PES), sulfonated poly(ether ether ketone) (SPEEK) and absorbed aqueous acid, as an alternative to traditional exchange membrane, was proposed and designed for H2/Cl2 fuel cells. The effect of SPEEK concentration at different degree of sulfonation on membrane properties was systematically studied. The room-temperature conductivity of the prepared membrane doped with 3 M hydrochloric acid reached up to 106–131 mS cm−1. The electrochemical characteristics of membrane/electrode assemblies using the PES–SPEEK composite membrane were also analyzed. The cell exhibited better performance than that of a cell based on Nafion 212 membrane (about twice). The study provides an effective way to fabricate high performance porous membranes for H2/Cl2 fuel cell applications.

Graphical abstract: Poly(ether sulfone)–sulfonated poly(ether ether ketone) blend ultrafiltration/nanofiltration-based proton-conductive membranes with improved performance for H2/Cl2 fuel cell application
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