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Title: Development of a crosslinked quaternized poly(styrene-b-isobutylene-b-styrene)/graphene oxide composite anion exchange membrane for direct alkaline methanol fuel cell application
Authors: Dai, Pei
Mo, Zhao-Hua
Xu, Ri-Wei
Zhang, Shu
Lin, Xiao
Lin, Wen-Feng
Wu, Yi-Xian
Issue Date: 2016
Publisher: © The Authors. Published by the Royal Society of Chemistry.
Citation: DAI, P. ...et al., 2016. Development of a crosslinked quaternized poly(styrene-b-isobutylene-b-styrene)/graphene oxide composite anion exchange membrane for direct alkaline methanol fuel cell application. RSC Advances, 6, pp. 52122–52130.
Abstract: A cross-linked quaternized poly(styrene-b-isobutylene-b-styrene)/graphene oxide composite anion exchange membrane has been prepared via intercalation of organo-modified graphene oxide (GOA), and characterized as a promising anion exchange membrane for direct alkaline methanol fuel cell application. In order to further increase the ionic conductivity of the composite membrane, quaternized GOA (GOAN) was introduced into QSIBS. Compared with the Nafion® membrane, the new anion exchange membranes show a comparable ionic conductivity (1.95 x 10-2 S cm-1) but much lower methanol permeability (1.7 x 10-7 cm2 s-1). The QSIBS/0047OAN-0.50 wt% composite membrane has the highest selectivity, which is about 12 times higher than that of the Nafion 115 membrane. The promising performance is attributed to two factors: one is the barrier effect of the quaternized octadecylamine-functionalized graphene oxide sheets, which is unfavourable for methanol crossover; and the other is the presence of interconnected ionic transportation channels between the incorporated modified graphene oxide and polymer, which is favourable for ionic transport.
Description: This is an Open Access Article. It is published by Royal Society of Chemistry under the Creative Commons Attribution 3.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/
Sponsor: This work received financial support from the National Natural Science Foundation of China (51221002), China Petroleum & Chemical Corporation (Sinopec, 215036) and EPSRC (EP/I013229/1), as part of the RCUK Energy Programme.
Version: Published
DOI: 10.1039/C6RA08037E
URI: https://dspace.lboro.ac.uk/2134/21636
Publisher Link: http://dx.doi.org/10.1039/C6RA08037E
Appears in Collections:Published Articles (Chemical Engineering)

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