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@ARTICLE{Rosen:905551,
author = {Rosen, Melanie and Finsterbusch, Martin and Guillon,
Olivier and Fattakhova-Rohlfing, Dina},
title = {{F}ree standing dual phase cathode tapes – scalable
fabrication and microstructure optimization of garnet-based
ceramic cathodes},
journal = {Journal of materials chemistry / A},
volume = {10},
number = {5},
issn = {2050-7488},
address = {London [u.a.]},
publisher = {RSC},
reportid = {FZJ-2022-00792},
pages = {2320-2326},
year = {2022},
abstract = {To make ceramic based all-solid-state batteries competitive
for the battery market, a shift from the separator supported
cell-design for lab cells to a scalable, cathode-supported
one is necessary to improve the energy density. Using tape
casting, we were able to demonstrate for the first time
all-ceramic free-standing LiCoO2
(LCO)/Li6.45Al0.05La3Zr1.6Ta0.4O12 (LLZO) mixed cathodes
with high capacities and active material utilization.
Further morphology engineering by introduction of a
sequential layer casting enabled us to tailor the
microstructure of the mixed cathodes resulting in opposite
concentration gradients for the active material and the
electrolyte over the thickness of the cathode. With this
optimized microstructure, we were able to increase the
discharge capacity of the free-standing mixed cathodes to
2.8 mA h cm−2 utilizing $99\%$ of the theoretical
capacity. For the oxide garnet-based system, both the
scalable fabrication method and the achieved electrochemical
performance demonstrates industrial relevance for the first
time. Additionally, the obtained free-standing cathodes have
sufficient mechanical stability to allow the application of
hybrid and ultra-thin separators to further increase the
energy density on the full cell level.},
cin = {IEK-1},
ddc = {530},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {1223 - Batteries in Application (POF4-122) / EProFest -
Evaluation von Prozessen zur Produktion von
Festkörperbatteriekomponenten (13XP0346B) / FestBatt-Oxide
- Materialplattform 'Oxide' im Rahmen des Kompetenzclusters
für Festkörperbatterien (13XP0173A) / LISZUBA -
Lithium-Schwefel-Feststoffbatterien als Zukunftsbatterie
(03XP0115B)},
pid = {G:(DE-HGF)POF4-1223 / G:(BMBF)13XP0346B / G:(BMBF)13XP0173A
/ G:(BMBF)03XP0115B},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000722648500001},
doi = {10.1039/D1TA07194G},
url = {https://juser.fz-juelich.de/record/905551},
}