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@ARTICLE{Paulus:859947,
author = {Paulus, Anja and Kammler, Simon and Heuer, Sabrina and
Paulus, Marc and Jakes, Peter and Granwehr, Josef and
Eichel, Rüdiger-A.},
title = {{S}ol {G}el vs {S}olid {S}tate {S}ynthesis of the {F}ast
{L}ithium-{I}on {C}onducting {S}olid {S}tate {E}lectrolyte
{L}i 7 {L}a 3 {Z}r 2 {O} 12 {S}ubstituted with {I}ron},
journal = {Journal of the Electrochemical Society},
volume = {166},
number = {3},
issn = {1945-7111},
address = {Pennington, NJ},
publisher = {Electrochemical Soc.},
reportid = {FZJ-2019-00753},
pages = {A5403 - A5409},
year = {2019},
abstract = {Two calcined products of Li6.4Fe0.2La3Zr2O12 can be
synthesized via the solid state method and the sol gel
method. Inhomogeneities of the iron distribution in the
powder for the solid state method lead to a combination of
cubic and tetragonal structure. By using the sol gel method
the homogeneity can significantly been increased resulting
in the desired pure phase cubic structured powders in
I4¯3d. By in situ dilatometer measurements the
densification process can be comprehended for the first time
for garnet type materials. The density can be significantly
increased by the usage of the sol gel synthesis compared to
the solid state synthesis with short sintering times of 2 h
delivering pure phase pellets for both synthesis methods.
Electrical impedance measurements revealed clearly divided
semicircles for the bulk and the grain boundary contribution
for the solid state synthesis, while the sol gel synthesis
showed only one semicircle from the bulk contribution due to
a large crystallite size. The total ionic conductivity for
the pellet synthesized via the sol gel method is 1.82 mS/cm
at 25°C which is the fastest found so far for garnet type
or garnet related materials.},
cin = {IEK-9},
ddc = {660},
cid = {I:(DE-Juel1)IEK-9-20110218},
pnm = {131 - Electrochemical Storage (POF3-131) / HITEC -
Helmholtz Interdisciplinary Doctoral Training in Energy and
Climate Research (HITEC) (HITEC-20170406)},
pid = {G:(DE-HGF)POF3-131 / G:(DE-Juel1)HITEC-20170406},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000456519000002},
doi = {10.1149/2.0641903jes},
url = {https://juser.fz-juelich.de/record/859947},
}