离子电导率
结晶度
电解质
离子液体
电导率
材料科学
快离子导体
溶剂
球磨机
硫化物
离子键合
准固态
无机化学
相(物质)
化学工程
化学
离子
物理化学
有机化学
冶金
复合材料
电极
色素敏化染料
工程类
催化作用
作者
Kentaro Yamamoto,Seung Dae Yang,Masakuni Takahashi,Koji Ohara,Takeshi Uchiyama,Toshiki Watanabe,Atsushi Sakuda,Akitoshi Hayashi,Masahiro Tatsumisago,Hiroyuki Muto,Atsunori Matsuda,Yoshiharu Uchimoto
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2021-02-12
卷期号:4 (3): 2275-2281
被引量:26
标识
DOI:10.1021/acsaem.0c02771
摘要
Recently, several sulfide solid electrolytes have been synthesized by liquid-phase synthesis for the commercialization of all-solid-state batteries. Unfortunately, the ionic conductivity for most of these electrolytes is unsatisfactory compared to that of solid electrolytes synthesized by conventional ball milling. This problem is attributed to different mechanisms between the liquid phase and the solid phase in reaction and formation. However, to the best of our knowledge, the effect of the solvent on the ionic conductivity of solid electrolytes has not been extensively investigated, although the identification of these properties is a key point in understanding the liquid-phase synthesis. Herein, the correlation between ionic conductivity and crystallinity originating from the solvents used has been investigated. As a result, the ionic conductivity of the electrolyte was found to be strongly dependent on polarity (δP) with low crystallinity. The highest ionic conductivity (5.09 × 10–4 S cm–1 at 25 °C) was obtained using butyl acetate, which exhibited the lowest δP. Moreover, the highest ionic conductivity of Li3PS4 produced by liquid-phase synthesis using butyl acetate was very comparable to that obtained by ball milling (5.14 × 10–4 S cm–1).
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