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Fluorine‐Doped Antiperovskite Electrolyte for All‐Solid‐State Lithium‐Ion Batteries
Author(s) -
Li Yutao,
Zhou Weidong,
Xin Sen,
Li Shuai,
Zhu Jinlong,
Lü Xujie,
Cui Zhiming,
Jia Quanxi,
Zhou Jianshi,
Zhao Yusheng,
Goodenough John B.
Publication year - 2016
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.201604554
Subject(s) - antiperovskite , orthorhombic crystal system , electrolyte , materials science , lithium (medication) , doping , faraday efficiency , ion , electrochemistry , fast ion conductor , conductivity , fluorine , inorganic chemistry , chemistry , nanotechnology , crystallography , crystal structure , electrode , metallurgy , organic chemistry , medicine , optoelectronics , layer (electronics) , endocrinology , nitride
A fluorine‐doped antiperovskite Li‐ion conductor Li 2 (OH)X (X=Cl, Br) is shown to be a promising candidate for a solid electrolyte in an all‐solid‐state Li‐ion rechargeable battery. Substitution of F − for OH − transforms orthorhombic Li 2 OHCl to a room‐temperature cubic phase, which shows electrochemical stability to 9 V versus Li + /Li and two orders of magnitude higher Li‐ion conductivity than that of orthorhombic Li 2 OHCl. An all‐solid‐state Li/LiFePO 4 with F‐doped Li 2 OHCl as the solid electrolyte showed good cyclability and a high coulombic efficiency over 40 charge/discharge cycles.