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Sulphonated Biphenylated Poly(aryl ether ketone)s for Fuel Cell Applications
Author(s) -
Liu B.,
Hu W.,
Robertson G. P.,
Kim Y. S.,
Jiang Z.,
Guiver M. D.
Publication year - 2010
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.200900076
Subject(s) - peek , ether , ketone , membrane , polymer chemistry , aryl , thermal stability , methanol , chemistry , biphenyl , direct methanol fuel cell , materials science , organic chemistry , polymer , electrode , alkyl , biochemistry , anode
New series of fully aromatic poly(ether ketone)s with a biphenyl pendant groups were synthesised. A direct comparison of sulphonation reaction among monophenylated poly(ether ether ketone) (Ph‐PEEK), biphenylated poly(ether ether ketone) (BiPh‐PEEK) and PEEK (Victrex) was thoroughly investigated. Several advantages of the pendant‐phenyl poly(ether ketone)s compared with commercial PEEK were identified, including ready control over the site of sulphonation and degree of sulphonation (DS), and mild and rapid sulphonation. The basic membrane physical properties comprising of thermal and mechanical properties, dimensional stability and proton conductivity were studied. One new membrane, sulphonated biphenylated poly(ether ether ketone) (BiPh‐SPEEKDK) having a good combination of membrane properties was fabricated into a membrane electrode assembly (MEA), and it showed excellent direct methanol fuel cell (DMFC) performance.