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@ARTICLE{Zhao:1029437,
author = {Zhao, Tong and Samanta, Bibek and de Irujo-Labalde, Xabier
Martinez and Whang, Grace and Yadav, Neelam and Kraft,
Marvin and Adelhelm, Philipp and Hansen, Michael Ryan and
Zeier, Wolfgang},
title = {{S}odium {M}etal {O}xyhalides ${N}a {M} {OC}l_4 ( {M} =
{N}b, {T}a)$ with {H}igh {I}onic {C}onductivities},
journal = {ACS materials letters},
volume = {6},
issn = {2639-4979},
address = {Washington, DC},
publisher = {ACS Publications},
reportid = {FZJ-2024-05126},
pages = {3683 - 3689},
year = {2024},
note = {Zudem unterstützt durch BMBF Projekt (03XP0525B) und},
abstract = {Halide-based ionic conductors have attracted growing
interest as solid electrolyte candidates because of their
suggested electrochemical oxidation stability and
deformability. However, most of the discovered sodium metal
halides exhibit relatively low ionic conductivities. To
address this, a new class of mechanochemically stabilized,
low-crystalline sodium metal oxyhalides $NaMOCl_4 (M = Nb,
Ta)$ is developed. By using the combination of scanning
electron microscopy–energy dispersive X-ray spectroscopy,
X-ray diffraction, pair distribution function analysis,
Raman spectroscopy, and nuclear magnetic resonance
spectroscopy, we qualitatively explored the composition and
local structure of these oxyhalides. Notably, $NaNbOCl_4$
and $NaTaOCl_4$ exhibit high ionic conductivities of 1.2 and
1.5 $mScm^{–1}$, respectively. Although the instability of
$NaMOCl_4$ against Na excludes their use as stand-alone
separators in solid-state sodium metal batteries, the
successful operation of a solid-state battery employing
$NaTaOCl_4$ as a catholyte at room temperature demonstrates
that $NaMOCl_4$ is a promising catholyte material.},
cin = {IMD-4},
ddc = {540},
cid = {I:(DE-Juel1)IMD-4-20141217},
pnm = {1221 - Fundamentals and Materials (POF4-122) / DFG project
G:(GEPRIS)459785385 - Röntgenpulverdiffraktometer
(459785385)},
pid = {G:(DE-HGF)POF4-1221 / G:(GEPRIS)459785385},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001271966800001},
doi = {10.1021/acsmaterialslett.4c01145},
url = {https://juser.fz-juelich.de/record/1029437},
}