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@ARTICLE{Taoussi:1041722,
author = {Taoussi, S. and Ouaha, A. and Naji, M. and Hoummada, K. and
Lahmar, A. and Alami, J. and Manoun, B. and El bouari, A.
and Frielinghaus, H. and Bih, L.},
title = {{N}ext-generation {L}i1.3+x{A}l0.3{A}sx{T}i1.7-x({PO}4)3
{NASICON} electrolytes with outstanding ionic conductivity
performance},
journal = {Journal of power sources},
volume = {644},
issn = {0378-7753},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2025-02402},
pages = {237103},
year = {2025},
abstract = {NASICON-type solid electrolytes feature prominently in the
improved safety and energy density of solid-state lithium
batteries (ASSLBs). Achieving high ionic conductivity in
these electrolytes is key to optimizing their performance.
In this study, we introduced a new class of NASICON-type
materials by doping arsenic into the Li1.3Al0.3Ti1.7(PO4)3
framework, creating a series of Li1.3+xAl0.3AsxTi1.7-x(PO4)3
phases with varying arsenic content (x = 0, 0.1, 0.2, 0.3),
synthesized using the standard solid-state reaction method.
X-ray diffraction confirmed the successful formation of the
Li1.3+xAl0.3AsxTi1.7-x(PO4)3 phases, which was further
validated by Rietveld refinement. Structural analyses
through FT-IR, Raman spectroscopy, NMR, and ICP-AES studies
validate the effective incorporation of arsenic into the
lattice. Among the different compositions,
Li1.5As0.2Al0.3Ti1.5(PO4)3 phase stood out due to its high
relative density of $89\%$ and its pore-free microstructure,
as observed through scanning electron microscopy results,
revealing the largest grain and crystallite size. Notably,
doping with arsenic resulted in a significant enhancement in
ionic conductivity, increasing from 5.34×10-5 Ω-1.cm-1 for
Li1.3Al0.3Ti1.7(PO4)3 to 8.57×10-4 Ω-1.cm-1 for the
Li1.5As0.2Al0.3Ti1.5(PO4)3 at 25°C. With a lithium
transference number of 0.99, and a conduction mechanism
largely unaffected by changes in temperature or composition,
demonstrating its suitability as a promising candidate for
solid electrolyte applications.},
cin = {JCNS-FRM-II / JCNS-4 / MLZ},
ddc = {620},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-4-20201012 / I:(DE-588b)4597118-3},
pnm = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
(POF4-6G4) / 632 - Materials – Quantum, Complex and
Functional Materials (POF4-632)},
pid = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001478616300001},
doi = {10.1016/j.jpowsour.2025.237103},
url = {https://juser.fz-juelich.de/record/1041722},
}