Application of Rod-Like Li6PS5Cl Directly Synthesized by a Liquid Phase Process to Sheet-Type Electrodes for All-Solid-State Lithium Batteries

被引:70
作者
Choi, Sunho [1 ]
Ann, Jiu [1 ]
Do, Jiyae [1 ]
Lim, Seungwoo [1 ]
Park, Chanhwi [1 ]
Shin, Dongwook [1 ]
机构
[1] Hanyang Univ, Div Mat Sci & Engn, Seoul 04763, South Korea
关键词
SUPERIONIC CONDUCTOR; SECONDARY BATTERIES; LICOO2; ELECTRODE; FACILE SYNTHESIS; PERFORMANCE; MORPHOLOGY; PARTICLES;
D O I
10.1149/2.0301903jes
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
All-solid-state lithium batteries employing sulfide-based solid electrolytes have emerged as promising next-generation batteries for large-scale energy storage applications because of their safety and high energy density. Among them, Li6PS5X (X = Cl, Br, I) with an argyrodite structure synthesized by planetary milling exhibits a rather high lithium ion conductivity of 10(-2)-10(-3) S cm(-1) at room temperature. Unfortunately, the planetary milling process has the disadvantage of producing the solid electrolytes with large, round-shaped particles. Recently, the solid electrolytes have been synthesized by not the mechanical milling but the liquid-phase process, which facilitates synthesis of sub-micrometer-to nanometer-sized solid electrolyte particles. It is important to reduce the particle size of the solid electrolyte to promote intimate contact with the active material in the composite cathode. Here, rod-like Li6PS5Cl solid electrolyte with a high ionic conductivity of 1.1 x 10(-3) S cm(-1) at room temperature was, for the first time, directly prepared by a liquid phase process using only a stirring method. SEM images showed the electrolyte had a rod-like morphology with a length of 20-30 mu m and a width of 2-3 mu m. The composite cathode was prepared from a slurry and the cell performances were investigated. (c) The Author(s) 2018. Published by ECS.
引用
收藏
页码:A5193 / A5200
页数:8
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