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@ARTICLE{Frankenberg:1047020,
author = {Frankenberg, Finn and Heck, Carina A. and Kissel,
Maximilian and Lange, Martin Alexander and Faka, Vasiliki
and Diener, Alexander and Haase, Philipp and Michalowski,
Peter and Zeier, Wolfgang G. and Janek, Jürgen and Kwade,
Arno},
title = {{T}ailoring {C}omposite {M}icrostructure {T}hrough
{M}illing for {D}ry‐{P}rocessed {S}ulfide‐{B}ased
{S}olid‐{S}tate {B}attery {C}athodes},
journal = {Small},
volume = {21},
number = {41},
issn = {1613-6810},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2025-04076},
pages = {e07279},
year = {2025},
abstract = {While the effects of new solid electrolytes and active
materials in cathode composites for solid-state batteries
are being intensively researched, little is known about the
influence of mechanical processing on the properties of
these composites. Here, the influence of mechanical process
parameters on the production of $Li_6PS_5Cl$ and
$LiNi_{0.83}Co_{0.11}Mn_{0.06}O_2$ composite cathodes
applying a planetary ball milling process is systematically
investigated. It is shown that the milling process has a
significant influence on the microstructure of the composite
by affecting the solid electrolyte particle size and the
formation of electrolyte-active material aggregates. The
combination of experimental results with discrete element
simulations shows that changes in microstructure with
increasing energy input result in an increase in the density
of heterocontacts, which improves the electrochemical
performance. However, if the energy input is too high, a
decrease in the crystallite size of $Li_6PS_5Cl$ and an
increase in strain in $LiNi_{0.83}Co_{0.11}Mn_{0.06}O_2$
have a negative impact on the electrochemical performance.
Subsequent dry film production of the pre-milled composites
reveals that a non-optimized composite can be partially
compensated by the high shear stresses acting during dry
film production. Overall, the paramount importance of
precisely controlling the milling process for the production
of cathode composites is demonstrated.},
cin = {IMD-4},
ddc = {620},
cid = {I:(DE-Juel1)IMD-4-20141217},
pnm = {1221 - Fundamentals and Materials (POF4-122)},
pid = {G:(DE-HGF)POF4-1221},
typ = {PUB:(DE-HGF)16},
doi = {10.1002/smll.202507279},
url = {https://juser.fz-juelich.de/record/1047020},
}