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@ARTICLE{Kiyek:1028951,
author = {Kiyek, Vivien and Hilger, Martin and Rosen, Melanie and
Gross, Jürgen Peter and Mann, Markus and
Fattakhova-Rohlfing, Dina and Schwaiger, Ruth and
Finsterbusch, Martin and Guillon, Olivier},
title = {{W}aste minimization in all-solid-state battery production
via re-lithiation of the garnet solid electrolyte {LLZO}},
journal = {Journal of power sources},
volume = {609},
issn = {0378-7753},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2024-04891},
pages = {234709 -},
year = {2024},
abstract = {Oxide-ceramic based electrolytes such as Li7La3Zr2O12
(LLZO), are one of the most promising solid electrolytes for
application in all-solid-state batteries. However, most of
its constituents are listed as critical raw materials,
highlighting the need to minimize waste during synthesis and
processing. Therefore, we investigated the re-use of aged
LLZO powder and aged LLZO green foils produced by
tape-casting, an industrial processing route suitable for
ASSBs. We established a new synthesis route to fully
recovery Li-poor LLZO and pyrochlore phase La2Zr2O7 by
simply adding a Li source during firing. By using recycled
LLZO powder in a <200 μm thick cast tape, we were able to
prove a similar ionic conductivity of 2.1 × 10−4 S cm−1
at room temperature and a critical current density of 0.75
mA cm−2 at 60 °C compared to fresh powder. This simple
and efficient re-synthesis strategy might hold the potential
to minimize waste streams of critical raw materials in
future industrial production processes of solid-state
batteries.},
cin = {IMD-2 / IMD-1},
ddc = {620},
cid = {I:(DE-Juel1)IMD-2-20101013 / I:(DE-Juel1)IMD-1-20101013},
pnm = {1222 - Components and Cells (POF4-122)},
pid = {G:(DE-HGF)POF4-1222},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001266916100001},
doi = {10.1016/j.jpowsour.2024.234709},
url = {https://juser.fz-juelich.de/record/1028951},
}