Application of Rod-Like Li6PS5Cl Directly Synthesized by a Liquid Phase Process to Sheet-Type Electrodes for All-Solid-State Lithium Batteriesopen access
- Authors
- Choi, Sunho; Ann, Jiu; Do, Jiyae; Lim, Seungwoo; Park, Chanhwi; Shin, Dongwook
- Issue Date
- Dec-2018
- Publisher
- ELECTROCHEMICAL SOC INC
- Citation
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.166, no.3, pp.A5193 - A5200
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY
- Volume
- 166
- Number
- 3
- Start Page
- A5193
- End Page
- A5200
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/15866
- DOI
- 10.1149/2.0301903jes
- ISSN
- 0013-4651
- Abstract
- 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.
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