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@ARTICLE{SzczsnaChrzan:1019502,
author = {Szczęsna-Chrzan, Anna and Vogler, Monika and Yan, Peng and
Żukowska, Grażyna Zofia and Wölke, Christian and
Ostrowska, Agnieszka and Szymańska, Sara and Marcinek,
Marek and Winter, Martin and Cekic-Laskovic, Isidora and
Wieczorek, Władysław and Stein, Helge S.},
title = {{I}onic conductivity, viscosity, and self-diffusion
coefficients of novel imidazole salts for lithium-ion
battery electrolytes},
journal = {Journal of materials chemistry / A},
volume = {11},
number = {25},
issn = {2050-7488},
address = {London [u.a.]},
publisher = {RSC},
reportid = {FZJ-2023-05449},
pages = {13483 - 13492},
year = {2023},
abstract = {Lithium-ion battery performance and longevity depend
critically on the conducting salt utilized in the
electrolyte.With new avenues for multifunctional integration
and optimization of functional properties, conducting
saltsbeyond lithium hexafluorophosphate (LiPF6) need to be
studied. Herein we elucidate on viscosity, ionicity,anion
self-diffusion and ionic conductivity through variation of
the length of the perfluoroalkyl side chainpresent in the
anions of the used lithium imidazole salts. Specifically, we
study LiPF6 in comparison withlithium
4,5-dicyano-2-(trifluoromethyl)imidazolide (LiTDI), lithium
4,5-dicyano-2-(pentafluoroethyl)imidazolide (LiPDI), and
lithium 4,5-dicyano-2-(n-heptafluoropropyl)imidazolide
(LiHDI). We find that the ionmobility of LiPF6 depends the
least on viscosity and its ionicity is the highest among the
electrolytesinvestigated here. LiTDI shows the strongest
correlation between ion mobility and viscosity and the
lowestionicity. LiPDI and LiHDI range between these two
regarding their ionicity and the correlation of mobility
withviscosity. The previously rarely studied anion
self-diffusion coefficients exhibit a strong correlation
withviscosity as it was to be expected. Differences between
the LiTDI, LiPDI and LiHDI salts are minute.},
cin = {IEK-12},
ddc = {530},
cid = {I:(DE-Juel1)IEK-12-20141217},
pnm = {1221 - Fundamentals and Materials (POF4-122) / BIG-MAP -
Battery Interface Genome - Materials Acceleration Platform
(957189) / BATTERY 2030PLUS - BATTERY 2030+ large-scale
research initiative: At the heart of a connected green
society (957213)},
pid = {G:(DE-HGF)POF4-1221 / G:(EU-Grant)957189 /
G:(EU-Grant)957213},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001000378400001},
doi = {10.1039/D3TA01217D},
url = {https://juser.fz-juelich.de/record/1019502},
}