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@ARTICLE{Finsterbusch:892108,
author = {Finsterbusch, Martin and Danner, Timo and Tsai, Chih-Long
and Uhlenbruck, Sven and Latz, Arnulf and Guillon, Olivier},
title = {{H}igh {C}apacity {G}arnet-{B}ased {A}ll-{S}olid-{S}tate
{L}ithium {B}atteries: {F}abrication and
3{D}-{M}icrostructure {R}esolved {M}odeling},
journal = {ACS applied materials $\&$ interfaces},
volume = {10},
number = {26},
issn = {1944-8252},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2021-01944},
pages = {22329 - 22339},
year = {2018},
abstract = {The development of high-capacity, high-performance
all-solid-state batteries requires the specific design and
optimization of its components, especially on the positive
electrode side. For the first time, we were able to produce
a completely inorganic mixed positive electrode consisting
only of LiCoO2 and Ta-substituted Li7La3Zr2O12 (LLZ:Ta)
without the use of additional sintering aids or conducting
additives, which has a high theoretical capacity density of
1 mAh/cm2. A true all-solid-state cell composed of a Li
metal negative electrode, a LLZ:Ta garnet electrolyte, and a
25 μm thick LLZ:Ta + LiCoO2 mixed positive electrode was
manufactured and characterized. The cell shows $81\%$
utilization of theoretical capacity upon discharging at
elevated temperatures and rather high discharge rates of 0.1
mA (0.1 C). However, even though the room temperature
performance is also among the highest reported so far for
similar cells, it still falls far short of the theoretical
values. Therefore, a 3D reconstruction of the manufactured
mixed positive electrode was used for the first time as
input for microstructure-resolved continuum simulations. The
simulations are able to reproduce the electrochemical
behavior at elevated temperature favorably, however fail
completely to predict the performance loss at room
temperature. Extensive parameter studies were performed to
identify the limiting processes, and as a result, interface
phenomena occurring at the cathode active
material/solid–electrolyte interface were found to be the
most probable cause for the low performance at room
temperature. Furthermore, the simulations are used for a
sound estimation of the optimization potential that can be
realized with this type of cell, which provides important
guidelines for future oxide based all-solid-state battery
research and fabrication.},
cin = {IEK-1 / JARA-ENERGY},
ddc = {600},
cid = {I:(DE-Juel1)IEK-1-20101013 / $I:(DE-82)080011_20140620$},
pnm = {131 - Electrochemical Storage (POF3-131)},
pid = {G:(DE-HGF)POF3-131},
typ = {PUB:(DE-HGF)16},
pubmed = {29888903},
UT = {WOS:000438179000061},
doi = {10.1021/acsami.8b06705},
url = {https://juser.fz-juelich.de/record/892108},
}