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@ARTICLE{Chayambuka:904162,
author = {Chayambuka, Kudakwashe and Cardinaels, Ruth and Gering,
Kevin L. and Raijmakers, Luc and Mulder, Grietus and
Danilov, Dmitri and Notten, Peter H. L.},
title = {{A}n experimental and modeling study of sodium-ion battery
electrolytes},
journal = {Journal of power sources},
volume = {516},
issn = {0378-7753},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2021-05732},
pages = {230658 -},
year = {2021},
abstract = {Electrolytes play an integral role in the successful
operation of any battery chemistry. The reemergence of the
sodium-ion battery (SIB) chemistry has therefore rejuvenated
the search for optimized SIB salts and solvents. Recent
experiments have found that 1 M NaPF6 in ethylene carbonate
(EC) and propylene carbonate (PC), EC0.5:PC0.5 (w/w) is the
best binary electrolyte for SIBs. However, mathematical
models, to elucidate these experimental findings, have so
far been lacking. Furthermore, no attempts to understand the
effect of EC composition on the conductivity and electrolyte
stability have been performed. Herein, the viscosity and
conductivity profiles of NaPF6 in EC0.5:PC0.5 electrolyte
are unraveled, using experimental and modeling approaches at
different temperatures and salt concentrations. The
viscosity is measured in a double-wall Couette cell and for
the first time, the ionic conductivity is determined using
two Pt blocking electrodes in a PAT-Cell electrochemical
setup. Modeling is performed using the Advanced Electrolyte
Model (AEM), a statistical mechanics software. It is shown
that the conductivity and viscosity relationship follows a
simple Stokes' law even at a low temperatures and high
concentrations. In addition, the stability of binary and
ternary electrolytes on hard carbon is shown to correlate
with the preferential ion solvation of EC.},
cin = {IEK-9},
ddc = {620},
cid = {I:(DE-Juel1)IEK-9-20110218},
pnm = {1223 - Batteries in Application (POF4-122)},
pid = {G:(DE-HGF)POF4-1223},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000715752100001},
doi = {10.1016/j.jpowsour.2021.230658},
url = {https://juser.fz-juelich.de/record/904162},
}