Formation Mechanism of ?-Li<sub>3</sub>PS<sub>4</sub> through Decomposition of Complexes
نویسندگان
چکیده
?-Li3PS4 is a solid electrolyte with high Li+ conductivity, applicable to sulfide-based all-solid-state batteries. While ?-Li3PS4-synthesized by solid-state reaction forms only in narrow 300-450 °C temperature range upon heating, readily available liquid-phase synthesis through low-temperature thermal decomposition of complexes composed PS43- and various organic solvents. However, the conversion mechanism from these not yet understood. Herein, we proposed Li3PS4·acetonitrile (Li3PS4·ACN) Li3PS4·1,2-dimethoxyethane (Li3PS4·DME), whose structural similarity would reduce nucleation barrier for formation ?-Li3PS4. Synchrotron X-ray diffraction clarified that both possess similar layered structures consisting alternating Li2PS4- Li+-ACN/DME layers. ACN/DME was removed rotation PS4 tetrahedra induced uniaxial compression form framework.
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ژورنال
عنوان ژورنال: Inorganic Chemistry
سال: 2021
ISSN: ['0020-1669', '1520-510X']
DOI: https://doi.org/10.1021/acs.inorgchem.1c00294