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@ARTICLE{Lobe:1017171,
author = {Lobe, Sandra and Bauer, Alexander and Sebold, Doris and
Wettengl, Nadine and Fattakhova-Rohlfing, Dina and
Uhlenbruck, Sven},
title = {{S}intering of {L}i-garnets: {I}mpact of {A}l-incorporation
and powder-bed composition on microstructure and ionic
conductivity},
journal = {Open ceramics},
volume = {10},
issn = {2666-5395},
address = {Amsterdam},
publisher = {Elsevier},
reportid = {FZJ-2023-03984},
pages = {100268 -},
year = {2022},
abstract = {Garnet-structured Li-ion conductors are promising
candidates as electrolytes for all-solid-state batteries.
However, sintering of these materials is still a challenge,
due to Li-loss accompanied by decomposition at elevated
temperatures. In this study, Li5La3Ta2O12, a garnet material
with reduced Li-content, was used as a model material to
investigate the impact of the Li content in powder beds as
well as the presence of Al either in the green bodies or in
the powder beds on the properties of the resulting sintered
materials. The resulting relative densities were increased
by sintering in a Li-rich powder bed compared to a powder
bed with identical stoichiometry. Furthermore, Al either in
the source material or in the powder bed was shown to
support densification, even if it is not incorporated in the
structure. The highest ionic conductivity was 3.4 × 10-5 S
cm-1 at 30 °C for Li5La3Ta2O12, which was sintered in a
Li6.54Al0.02La3Zr1.6Ta0.4O12 powder bed.},
cin = {IEK-1 / IEK-9},
ddc = {600},
cid = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-9-20110218},
pnm = {1221 - Fundamentals and Materials (POF4-122) /
FestBatt-Oxide - Materialplattform 'Oxide' im Rahmen des
Kompetenzclusters für Festkörperbatterien (13XP0173A)},
pid = {G:(DE-HGF)POF4-1221 / G:(BMBF)13XP0173A},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001108648700005},
doi = {10.1016/j.oceram.2022.100268},
url = {https://juser.fz-juelich.de/record/1017171},
}