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@ARTICLE{Wirtz:888328,
author = {Wirtz, Maike and Linhorst, Max and Veelken, Philipp and
Tempel, Hermann and Kungl, Hans and Moerschbacher, Bruno M.
and Eichel, Rüdiger‐A.},
title = {{P}olyethylene oxide‐{L}i 6.5 {L}a 3 {Z}r 1.5 {T}a 0.5
{O} 12 hybrid electrolytes: {L}ithium salt concentration and
biopolymer blending},
journal = {Electrochemical science advances},
volume = {1},
number = {2},
issn = {2698-5977},
address = {Weinheim},
publisher = {Wiley-VCH Verlag GmbH $\&$ Co KGaA},
reportid = {FZJ-2020-04847},
pages = {e2000029},
year = {2021},
abstract = {Hybrid electrolytes are developed to meet the requirements
of safety, performance, and manufacturing for electrolytes
suitable for Li-ion batteries with Li-anodes. Recent
challenges—in addition to these key properties—emphasize
the importance of sustainability. While compromising between
these three objectives, the currently available materials
are still well below the targeted goals. Three important
issues for the design of hybrid electrolytes are (i) the
role of the morphology and surface state of the ceramic
particles in the polymer matrix, (ii) the dependence of salt
concentration and ionic conductivity and, (iii) the effects
of substituting part of the polyethylene oxide (PEO), with
biopolymers. Electrolyte films were prepared from PEO,
lithium bis(trifluoromethanesulfonyl)imide (LiTFSI),
Li6.5La3Zr1.5Ta0.5O12 (LLZO:Ta), and biopolymers with
varying contents of these components by a solution casting
method. The films were analyzed with respect to structural
and microstructural characteristics by DSC, Raman
spectroscopy, and SEM. Ionic conductivity was evaluated by
electrochemical impedance spectroscopy. Most interesting,
when comparing films with LLZO:Ta versus without, the
content of LiTFSI required for the maximum conductivity in
the respective systems is different: a higher LiTFSI
concentration is required for the former type. Overall,
addition of LLZO:Ta as well as partial substitution of PEO
by chitosan mesylate or cellulose acetate decrease the ionic
conductivity. Thus—at least in the present approaches—a
loss in performance is the drawback from attempts to enhance
the safety by LLZO:Ta additions and sustainability by
biopolymer blending of hybrid electrolytes.},
cin = {IEK-9},
ddc = {540},
cid = {I:(DE-Juel1)IEK-9-20110218},
pnm = {122 - Elektrochemische Energiespeicherung (POF4-122) /
HITEC - Helmholtz Interdisciplinary Doctoral Training in
Energy and Climate Research (HITEC) (HITEC-20170406)},
pid = {G:(DE-HGF)POF4-122 / G:(DE-Juel1)HITEC-20170406},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001138658600005},
doi = {10.1002/elsa.202000029},
url = {https://juser.fz-juelich.de/record/888328},
}