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@INPROCEEDINGS{Lobe:186130,
author = {Lobe, Sandra and Bünting, Aiko and Tsai, Chih-Long and
Finsterbusch, Martin and Dellen, Christian and Uhlenbruck,
Sven and Hammer, Eva-Maria and Reppert, Thorsten and Gehrke,
Hans-Gregor and Guillon, Olivier},
title = {{A}ll-solid-state batteries with
${L}i_7{L}a_3{Z}r_2{O}_{12}$ electrolyte},
reportid = {FZJ-2015-00218},
year = {2014},
abstract = {To avoid problems connected to organic liquid electrolytes
used in conventional Li-ion batteries, solid electrolytes
like lithium conducting sulfides [1], oxides [2] and
phosphates [3] can be used in all-solid-state Li-ion
batteries. One promising oxide material is the
garnet-structured Li7La3Zr2O12 (LLZ) with a reasonable
Li-ion conductivity of about 10-4 S/cm, a high thermal (up
to 1250°C), chemical (e.g. against metallic lithium) and
electrochemical stability (up to 8V vs. Li/Li+). Partially
substitution of Li by Al or Zr by Ta lowers the cubic phase
crystallization temperature resulting in an increased Li-ion
conductivity. In order to compensate the lower Li-ion
conductivity compared to liquid electrolytes, the overall
internal resistance of the cell can be reduced by applying a
thin electrolyte layer. Different approaches have been used
to deposit garnet-structured Li7La3Zr2O12 thin films [4, 5]
but were not successful yet due to problems with the
crystallization of LLZ precursors into garnet structure on
non-single-crystal substrate. Deposition of cubic phase
Li7La3Zr2O12 layer by r.f. magnetron sputtering was carried
out directly on a cathode material coated titanium
substrate. Gracing incidence x-ray diffraction reveals the
cubic garnet structured phase, LLZ was formed as a thin film
electrolyte for a thin film battery. SIMS analysis for
internal elemental diffusions between deposited layers, SEM
for microstructures, electrochemical tests of the formed LLZ
layer and battery are presented as well.},
month = {Nov},
date = {2014-11-27},
organization = {Bunsen Kolloquium "Solid State
Batteries - from Fundamentals to
Application", Frankfurt/Main (Germany),
27 Nov 2014 - 28 Nov 2014},
cin = {IEK-1},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {123 - Fuel Cells (POF2-123) / HITEC - Helmholtz
Interdisciplinary Doctoral Training in Energy and Climate
Research (HITEC) (HITEC-20170406)},
pid = {G:(DE-HGF)POF2-123 / G:(DE-Juel1)HITEC-20170406},
typ = {PUB:(DE-HGF)1},
url = {https://juser.fz-juelich.de/record/186130},
}