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@ARTICLE{Bger:1017340,
author = {Böger, Thorben and Bernges, Tim and Li, Yuheng and Canepa,
Pieremanuele and Zeier, Wolfgang G.},
title = {{T}hermal {C}onductivities of {L}ithium-{I}on-{C}onducting
{S}olid {E}lectrolytes},
journal = {ACS applied energy materials},
volume = {6},
number = {20},
issn = {2574-0962},
address = {Washington, DC},
publisher = {ACS Publications},
reportid = {FZJ-2023-04052},
pages = {10704 - 10712},
year = {2023},
abstract = {Solid electrolytes and solid-state batteries have gathered
attention in recent years as a potential alternative to
state-of-the-art lithium-ion batteries, given the promised
increased energy density and safety following the
replacement of flammable organic electrolytes with solids.
While ongoing research focuses mainly on improving the ionic
conductivities of solid electrolytes, little is known about
the thermal transport properties of this material class.
This includes fundamental studies of heat capacities and
thermal conductivities, application-oriented investigations
of porosity effects, and the modeling of the temperature
distribution in solid-state batteries during operation. To
expand the understanding of transport in solid electrolytes,
in this work, thermal properties of electrolytes in the
argyrodite family (Li6PS5X with X = Cl, Br, I, and
Li5.5PS4.5Cl1.5) and Li10GeP2S12 as a function of
temperature and porosity are reported. It is shown that the
thermal conductivities of solid electrolytes are in the
range of liquid electrolytes. Utilizing effective medium
theory to describe the porosity-dependent results, an
empirical predictive model is obtained, and the intrinsic
(bulk) thermal conductivities for all electrolytes are
extracted. Moreover, the temperature-independent, glass-like
thermal conductivities found in all materials suggest that
thermal transport in these ionic conductors occurs in a
nontextbook fashion.},
cin = {IEK-12},
ddc = {540},
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:001082562700001},
doi = {10.1021/acsaem.3c01977},
url = {https://juser.fz-juelich.de/record/1017340},
}