Home > Publications database > Sodium Metal Oxyhalides $Na M OCl_4 ( M = Nb, Ta)$ with High Ionic Conductivities > print

001     1029437
005     20250203133155.0
024 7 _ |a 10.1021/acsmaterialslett.4c01145
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037 _ _ |a FZJ-2024-05126
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100 1 _ |a Zhao, Tong
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245 _ _ |a Sodium Metal Oxyhalides $Na M OCl_4 ( M = Nb, Ta)$ with High Ionic Conductivities
260 _ _ |a Washington, DC
|c 2024
|b ACS Publications
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500 _ _ |a Zudem unterstützt durch BMBF Projekt (03XP0525B) und
520 _ _ |a 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.
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700 1 _ |a Samanta, Bibek
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700 1 _ |a de Irujo-Labalde, Xabier Martinez
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700 1 _ |a Whang, Grace
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700 1 _ |a Yadav, Neelam
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700 1 _ |a Kraft, Marvin
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700 1 _ |a Adelhelm, Philipp
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700 1 _ |a Hansen, Michael Ryan
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700 1 _ |a Zeier, Wolfgang
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773 _ _ |a 10.1021/acsmaterialslett.4c01145
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856 4 _ |y Published on 2024-06-16. Available in OpenAccess from 2025-06-16.
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856 4 _ |y Published on 2024-06-16. Available in OpenAccess from 2025-06-16.
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856 4 _ |y Published on 2024-06-16. Available in OpenAccess from 2025-06-16.
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856 4 _ |y Published on 2024-06-16. Available in OpenAccess from 2025-06-16.
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