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Water‐Mediated Synthesis of a Superionic Halide Solid Electrolyte
Author(s) -
Li Xiaona,
Liang Jianwen,
Chen Ning,
Luo Jing,
Adair Keegan R.,
Wang Changhong,
Banis Mohammad Norouzi,
Sham TsunKong,
Zhang Li,
Zhao Shangqian,
Lu Shigang,
Huang Huan,
Li Ruying,
Sun Xueliang
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201909805
Subject(s) - ionic conductivity , electrolyte , fast ion conductor , electrochemistry , conductivity , halide , electrochemical window , materials science , dissolution , inorganic chemistry , chemical engineering , oxide , ionic bonding , electrode , chemistry , ion , organic chemistry , metallurgy , engineering
To promote the development of solid‐state batteries, polymer‐, oxide‐, and sulfide‐based solid‐state electrolytes (SSEs) have been extensively investigated. However, the disadvantages of these SSEs, such as high‐temperature sintering of oxides, air instability of sulfides, and narrow electrochemical windows of polymers electrolytes, significantly hinder their practical application. Therefore, developing SSEs that have a high ionic conductivity (>10 −3 S cm −1 ), good air stability, wide electrochemical window, excellent electrode interface stability, low‐cost mass production is required. Herein we report a halide Li + superionic conductor, Li 3 InCl 6 , that can be synthesized in water. Most importantly, the as‐synthesized Li 3 InCl 6 shows a high ionic conductivity of 2.04×10 −3 S cm −1 at 25 °C. Furthermore, the ionic conductivity can be recovered after dissolution in water. Combined with a LiNi 0.8 Co 0.1 Mn 0.1 O 2 cathode, the solid‐state Li battery shows good cycling stability.