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@ARTICLE{Zhao:858532,
author = {Zhao, Yue and Yoshimura, Kimio and Yu, Hwan-Chul and
Maekawa, Yasunari and Hiroki, Akihiro and Kishiyama,
Yoshihiro and Shishitani, Hideyuki and Yamaguchi, Susumu and
Tanaka, Hirohisa and Koizumi, Satoshi and Appavou,
Marie-Sousai and Houston, Judith and Radulescu, Aurel and
Richter, Dieter},
title = {{S}mall angle neutron scattering study on the morphology of
imidazolium-based grafted anion-conducting fuel cell
membranes},
journal = {Physica / B Condensed matter B},
volume = {551},
issn = {0921-4526},
address = {Amsterdam},
publisher = {Elsevier},
reportid = {FZJ-2018-07403},
pages = {203 - 207},
year = {2018},
abstract = {Two imidazolium based graft-type of anion-conducting
electrolyte membranes (AEMs) for fuel cells with a moderate
ion exchange capacity of ∼1.0 mmol/g were successfully
prepared by radiation-induced grafting to introduce
imidazolium and styrene units into a
poly(ethylene-co-tetrafluoroethylene) (ETFE) base film.
Though imidazolium groups were desired to connect with
styrene groups via two different ways, i.e. parallel or
perpendicular orientations to the graft-polymer chains via
copolymerization (AEM1) or homo-polymerization (AEM2), both
AEMs possess high ion conductivity (>100 mS/cm at
60 °C) and modest stability. The morphologies of these
membranes were elucidated by small-angle neutron scattering
method. Our results revealed that 1) both AEMs show clear
microphase separation with a length scale of 30–40 nm,
and the semi-crystalline structural feature of the
hydrophobic microdomains contributes to the membrane
mechanical property; 2) at the length scale <6 nm, ionic
structures of the two AEMs are different: Parallel type of
AEM1 shows a homogeneous distribution of ions in the ion
channel; while perpendicular type of AEM2 shows ionic
clusters nanophase-separated from the graft polymers.},
cin = {JCNS-FRM-II / Neutronenstreuung ; JCNS-1 / JCNS-2},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)JCNS-2-20110106},
pnm = {6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
Neutron Research (JCNS) (POF3-623)},
pid = {G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4},
experiment = {EXP:(DE-MLZ)KWS2-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000455012800042},
doi = {10.1016/j.physb.2018.01.064},
url = {https://juser.fz-juelich.de/record/858532},
}