Homopolymer-like sulfonated phenyl- and diphenyl-poly(arylene ether ketone)s for fuel cell applications |
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Authors: | Baijun Liu Yu Seung Kim Wei Hu Gilles P. Robertson Bryan S. Pivovar Michael D. Guiver |
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Affiliation: | 1. Institute for Chemical Process and Environmental Technology, National Research Council, Ottawa, Ontario K1A 0R6, Canada;2. Los Alamos National Laboratory, Electronic and Electrochemical Materials and Devices, Los Alamos, NM 87545, USA;3. Alan G. MacDiarmid Institute, Jilin University, Changchun 130023, PR China |
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Abstract: | Two series of homopolymer-like sulfonated aromatic poly(ether ketone)s (SPEKs) were readily prepared and post-sulfonated using mild conditions. The homopolymer-like SPEKs exhibited advantages in synthesis and physical properties over typical post-sulfonated random copolymers, such as rapid and mild sulfonation conditions, high molecular weights, site specificity and control over IEC, as well as an excellent combination of dimensional swelling stability, low methanol permeability and high proton conductivity. These beneficial membrane properties are reflected in the attractive direct methanol fuel cell (DMFC) and polymer electrolyte membrane fuel cell (PEMFC) performance of these homopolymer-like SPEKs as compared with typical random copolymer SPEKs. |
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Keywords: | Proton exchange membrane Fuel cell Single cell performance |
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