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Solvent‐assisted ball milling for synthesizing solid electrolyte Li 7 P 3 S 11
Author(s) -
Xue Bai,
Fan Bo,
Li Bin,
Chen Lu,
Wang Fang,
Luo Zhongkuan,
Zhang Xianghua,
Ma Hongli
Publication year - 2019
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16249
Subject(s) - ball mill , solvent , electrolyte , sulfide , ionic conductivity , materials science , amorphous solid , chemical engineering , chemistry , inorganic chemistry , metallurgy , crystallography , organic chemistry , electrode , engineering
Solvent‐assisted ball milling is used to prepare the sulfide solid electrolyte Li 7 P 3 S 11 . Comparing with dry ball milling and simple liquid phase synthesis, solvent‐assisted ball milling can significantly promote the reaction of the starting materials from tens of hours to only several hours. When using dimethoxyethane as the assistant solvent, relatively pure Li 7 P 3 S 11 with ionic conductivity of 1.0 × 10 −4 S/cm can be synthesized after 8‐hour ball milling with following 2‐hour 180°C vacuum drying and 4‐hour 230°C heat treatment. It is revealed that the transition from the precursor to Li 7 P 3 S 11 is a two‐step process, with an intermediate composed of a thio‐ LISICON III analogous phase and an amorphous phase. This work not only provides a synthesis route of Li 7 P 3 S 11 which reduces synthesis duration, but also offers an instructive insight into the phase evolution in solvent‐based synthesis process of sulfide solid electrolytes.