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High Conductive Anion Exchange Membranes from All-Carbon Twisted Intrinsic Microporous Polymers by Qian Wang; Lei Huang; Zimo Wang; Jifu Zheng; Qifeng Zhang; Guorui Qin; Shenghai Li; Suobo Zhang is a Materials Science article available to read on EtoBox.

What is High Conductive Anion Exchange Membranes from All-Carbon Twisted Intrinsic Microporous Polymers about?

This study obtained solution-tractable anion-selective membranes with intrinsic porous and highly ionic conductive capabilities by a convenient route. We used the coplanar structure of 9,9-dimethylxanthene to construct a rigid twisted intrinsic microporous all-carbon skeleton PDI with up to 363.4 m 2 g -1 of Brunauer-Emmett-Teller surface, and the pore was filled with a quaternary ammonium salt containing long flexible alkyl chains, which produced an efficient means of OH -transport. The conductivity of the resulting polymer (QPDI-100) is reached as high as 205 mS cm -1 at 80 °C. The size stability was determined to be good at high conductance and swelling ratio is less than 15% at 80 °C. QPDI-a exhibited good stability under alkaline conditions, and 90% of the conductivity of QPDI-100 was retained after being immersed in 1 M NaOH solution at 60 °C for 40 days. The power density of H 2 -O 2 fuel cells at 60 °C was 437.7 mW cm -2 . The prepared intrinsic porous anion exchange membranes (AEMs) demonstrate potential for the development of anion exchange membrane fuel cells. This membrane design strategy paves the way for a new generation of AEMs for the purposes of electrochemical ene

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Author

Qian Wang; Lei Huang; Zimo Wang; Jifu Zheng; Qifeng Zhang; Guorui Qin; Shenghai Li; Suobo Zhang

Published

2022

Language

EN

Field

Materials Science (Physical Sciences)