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@ARTICLE{Reber:907896,
author = {Reber, David and Borodin, Oleg and Becker, Maximilian and
Rentsch, Daniel and Thienenkamp, Johannes Helmut and Grissa,
Rabeb and Zhao, Wengao and Aribia, Abdessalem and Brunklaus,
Gunther and Battaglia, Corsin and Kühnel, Ruben-Simon},
title = {{W}ater/{I}onic {L}iquid/{S}uccinonitrile {H}ybrid
{E}lectrolytes for {A}queous {B}atteries},
journal = {Advanced functional materials},
volume = {32},
number = {20},
issn = {1057-9257},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2022-02274},
pages = {2112138},
year = {2022},
note = {Funding: Swiss National Science Foundation
$206021_150638/1$},
abstract = {The water-in-salt concept has significantly improved the
electrochemical stability of aqueous electrolytes, and the
hybridization with organic solvents or ionic liquids has
further enhanced their reductive stability, enabling cell
chemistries with up to 150 Wh kg−1 of active material.
Here, a large design space is opened by introducing
succinonitrile as a cosolvent in water/ionic
liquid/succinonitrile hybrid electrolytes (WISHEs). By means
of succinonitrile addition, the solubility limits can be
fully circumvented, and the properties of the electrolytes
can be optimized for various metrics such as highest
electrochemical stability, maximum conductivity, or lowest
cost. While excessive nitrile fractions render the mixtures
flammable, careful selection of component ratios yields
highly performant, nonflammable electrolytes that enable
stable cycling of Li4Ti5O12–LiNi0.8Mn0.1Co0.1O2 full cells
over a wide temperature range with strong rate performance,
facilitated by the fast conformational dynamics of
succinonitrile. The WISHEs allow stable cycling with a
maximum energy density of ≈140 Wh kg−1 of active
material, Coulombic efficiencies of close to $99.5\%$ at 1C,
and a capacity retention of $53\%$ at 10C relative to 1C.},
cin = {IEK-12},
ddc = {530},
cid = {I:(DE-Juel1)IEK-12-20141217},
pnm = {1221 - Fundamentals and Materials (POF4-122)},
pid = {G:(DE-HGF)POF4-1221},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000761531600001},
doi = {10.1002/adfm.202112138},
url = {https://juser.fz-juelich.de/record/907896},
}