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

Title
Application of Rod-Like Li6PS5Cl Directly Synthesized by a Liquid Phase Process to Sheet-Type Electrodes for All-Solid-State Lithium Batteries
Author
신동욱
Keywords
SUPERIONIC CONDUCTOR; SECONDARY BATTERIES; LICOO2 ELECTRODE; FACILE SYNTHESIS; PERFORMANCE; MORPHOLOGY; PARTICLES
Issue Date
2018-12
Publisher
ELECTROCHEMICAL SOC INC
Citation
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v. 166, NO 3, Page. 5193-5200
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. (c) The Author(s) 2018. Published by ECS.
URI
https://iopscience.iop.org/article/10.1149/2.0301903jeshttp://repository.hanyang.ac.kr/handle/20.500.11754/136764
ISSN
0013-4651; 1945-7111
DOI
10.1149/2.0301903jes
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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