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@ARTICLE{Lin:897360,
author = {Lin, Jingjing and Noferini, Daria and Veroutis, Emmanouil
and Korte, Carsten and Holderer, Olaf},
title = {{T}he {C}harge {T}ransport {M}echanism in
{B}rønsted-{A}cidic {P}rotic {I}onic {L}iquid/{W}ater
{S}ystems – {A}n {NMR} and {QENS} {S}tudy},
journal = {Journal of molecular liquids},
volume = {343},
issn = {0167-7322},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2021-03748},
pages = {117712 -},
year = {2021},
abstract = {In this study, a protic ionic liquid (PIL),
2-Sulfoethylmethylammonium triflate [2-Sema][TfO] is
considered as a potential new proton conducting electrolyte
for future polymer membrane fuel cells capable of ambient
air operation above 100 °C. The proton dynamics of the PIL
with residual water are examined as a function of the
hydration level on different time scales using pulsed field
gradient nuclear magnetic resonance (PFG-NMR) and
quasi-elastic neutron scattering (QENS). The separation of
the different contributing relaxation processes enables a
quantification of the proton fractions for the underlying
hopping or vehicular motions. The hopping motion of the
water in the time scale of picosecond and the vehicular
motion in the time scale of nanosecond are detected by means
of QENS. Such dynamic processes can be well described by the
Chudley-Elliot jump model. This emphasised the presence of
fixed jump lenghts. In the timescale of millisecond, the
cooperative transport of the active protons of the acidic
SO3H group and of the H2O molecules, as well as the
vehicular transport of the PIL cations are detected by NMR.
The different diffusion coefficients obtained by the NMR and
QENS techniques are discussed in detail.},
cin = {JCNS-FRM-II / MLZ / JCNS-4 / JCNS-1 / IEK-14},
ddc = {540},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3 /
I:(DE-Juel1)JCNS-4-20201012 / I:(DE-Juel1)JCNS-1-20110106 /
I:(DE-Juel1)IEK-14-20191129},
pnm = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
(POF4-6G4) / 1231 - Electrochemistry for Hydrogen (POF4-123)
/ 632 - Materials – Quantum, Complex and Functional
Materials (POF4-632)},
pid = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-1231 /
G:(DE-HGF)POF4-632},
experiment = {EXP:(DE-MLZ)SPHERES-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000708703200074},
doi = {10.1016/j.molliq.2021.117712},
url = {https://juser.fz-juelich.de/record/897360},
}