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@INPROCEEDINGS{Hoff:910694,
author = {Hoff, Linda and Scheld, Walter Sebastian and Vedder,
Christian and Stollenwerk, Jochen},
editor = {Kling, Rainer and Watanabe, Akira},
title = {{L}aser sintering of ceramic-based solid-state battery
materials},
volume = {11989},
publisher = {SPIE},
reportid = {FZJ-2022-04066},
pages = {119890E},
year = {2022},
abstract = {Solid-state batteries (SSBs) are a promising technology for
high travelling ranges and safety in future electromobility.
In SSBs, separator and liquid electrolyte materials are
combined in a solid-state electrolyte layer. Possible
materials for SSBs are ceramic oxides, for example LiCoO2
(LCO) as cathode material and Li7La3Zr2O12 (LLZO) as
electrolyte material. By means of screen printing, a mixed
cathode material (mixture of cathode and electrolyte
material to have higher ionic conductivity in the cathode)
is applied on a stainless steel current collector foil and
after thermal processing, the electrolyte material is
printed on top of the sintered mixed cathode to create a
half-cell. Both layers are thermally post treated (dried and
sintered) in consecutive steps to produce functional layers
for SSBs. Conventional heat treatment is done in an oven
process. A main disadvantage is the diffusion of materials
into adjacent layers due to long process times (range of
minutes) at high temperatures. Furthermore, the battery
half-cell cannot be treated at high temperatures due to
incompatibilities in decomposition temperatures of LLZO and
LCO. Preservation of the crystal structure and a suitable
temperature management during the sintering process are of
enormous importance. By means of laser processing, short
interaction times (range of seconds and below) are realized.
High heating rates show potential for reducing diffusion
processes and preserving the crystal structure of the
materials. In this work, the influence of different
interaction times on crystal structure and adhesion are
investigated for laser sintering of LLZO and LCO micro
particle layers.},
month = {Jan},
date = {2022-01-22},
organization = {Laser-based Micro- and Nanoprocessing
XVI, San Francisco (United States), 22
Jan 2022 - 27 Feb 2022},
cin = {IEK-1},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {1223 - Batteries in Application (POF4-122) /
Verbundprojekt: OptiKeraLyt: Material- und
Produktionsprozessoptimierung für Lithium-Ionen-Batterien
mit keramischen Festkörperelektrolyten; Teilvorhaben:
Synthese von keramischen Festkörperkomponenten (03ETE016F)},
pid = {G:(DE-HGF)POF4-1223 / G:(BMWi)03ETE016F},
typ = {PUB:(DE-HGF)8},
UT = {WOS:000836136100013},
doi = {10.1117/12.2607752},
url = {https://juser.fz-juelich.de/record/910694},
}