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@ARTICLE{Loutati:912435,
author = {Loutati, Asmaa and Guillon, Olivier and Tietz, Frank and
Fattakhova-Rohlfing, Dina},
title = {{N}a{SICON}-type solid-state {L}i+ ion conductors with
partial polyanionic substitution of phosphate with silicate},
journal = {Open ceramics},
volume = {12},
issn = {2666-5395},
address = {Amsterdam},
publisher = {Elsevier},
reportid = {FZJ-2022-05614},
pages = {100313},
year = {2022},
note = {Grant names:BMBF-03XP0173A Kompetenzcluster
Festbatt-OxideBMBF-13XP0434A Kompetenzcluster
Festbatt2-Oxide},
abstract = {The increasing demand for safe energy storage has led to
intensive investigations of solid-state Li+-ion conductors
in the Li2O-M2O3–ZrO2–SiO2–P2O5 system. As a
continuation of the cation substitution in this system,
which we reported on very recently, a study of the impact of
polyanionic substitutions on ionic conductivity was carried
out here in two series, Li3+xSc2SixP3-xO12 (0 ≤
x ≤ 0.6) and Li1.2+xSc0.2Zr1.8SixP3-xO12 (0.3 ≤
x ≤ 2.8), with the aim of increasing ionic conductivity,
determing the phase stability, and optimizing the processing
conditions – especially decreasing the sintering
temperatures – depending on the level of substitution.The
polyanionic substitution, i.e. the substitution of (PO4)3-
with (SiO4)4-, in the Li2O–Sc2O3–ZrO2–SiO2–P2O5
system revealed that a) the sintering temperature can
effectively be reduced, b) the presence of zirconium can
limit the evaporation of lithium species even at high
sintering temperatures, c) the purity of the NaSICON
materials has a strong influence on the grain boundary
resistance, and therefore on the ionic conductivity, and d)
the silicate substitution in Li3+xSc2SixP3-xO12 (0 ≤
x ≤ 0.6) stabilized the monoclinic polymorph (space
group P21/n) with an enhanced total ionic conductivity at
25 °C from 6.5 × 10−7 S cm−1 to
1.2 × 10−5 S cm−1 for x = 0 to x = 0.15,
respectively, exhibiting the highest ionic conductivity at
25 °C among the compositions investigated.},
cin = {IEK-1 / IEK-12},
ddc = {600},
cid = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-12-20141217},
pnm = {1221 - Fundamentals and Materials (POF4-122)},
pid = {G:(DE-HGF)POF4-1221},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001103438600004},
doi = {10.1016/j.oceram.2022.100313},
url = {https://juser.fz-juelich.de/record/912435},
}