首页|Synthesis and properties of a novel side-chain-type hydroxide exchange membrane for direct methanol fuel cells (DMFCs)
Synthesis and properties of a novel side-chain-type hydroxide exchange membrane for direct methanol fuel cells (DMFCs)
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NETL
NSTL
Elsevier
A series of poly(ether ether ketone) anion exchange membranes with tunable 1EC (Ion-exchange capacity) values are polymerized from a novel bisphenol monomer (4-methyl)phenylhydroquinone. These poly(ether ether ketone) copolymers contain methyl groups on the rigid side chain. The degrees of bromination and quaternary amination of the copolymers are controlled by manipulating the contents of methyl groups in the copolymers. Hence, the IEC tunability of the membrane is achieved. The resulting PEEK-Q-xx membranes show good dimensional stability. The highest swelling ratio (PEEK-Q, with an IEC value of 0.90mequiv. g~(-1)) is only 9.0% at 80 C,at which temperature, the hydroxide conductivity of PEEK-Q membrane is 0.031 Scm~(-1). The methanol permeability values of the membranes are all below 1.5 × 10~(-7) cm~2 s~(-1), which are much lower than that of Nafion 117. These properties make the membranes good candidate materials for anion exchange membranes for alkaline direct methanol fuel cells.
Alan G MacDiarmid Institute, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China
SIN0PEC Beijing Research Institute of Chemical Industry, Beijing 100013, People's Republic of China
Alan G MacDiarmid Institute, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China,SIN0PEC Beijing Research Institute of Chemical Industry, Beijing 100013, People's Republic of China
NETL
NSTL
Elsevier
