Fluorine-Doped Antiperovskite Electrolyte for All-Solid-State Lithium-Ion Batteries

Yutao Li; Weidong Zhou; Sen Xin; Shuai Li; Jinlong Zhu; Xujie Lü; Zhiming Cui; Quanxi Jia; Jianshi Zhou; Yusheng Zhao; John B Goodenough

doi:10.1002/anie.201604554

Fluorine-Doped Antiperovskite Electrolyte for All-Solid-State Lithium-Ion Batteries

Angew Chem Int Ed Engl. 2016 Aug 16;55(34):9965-8. doi: 10.1002/anie.201604554. Epub 2016 Jun 30.

Authors

Yutao Li¹, Weidong Zhou¹, Sen Xin^{1

2}, Shuai Li³, Jinlong Zhu³, Xujie Lü⁴, Zhiming Cui¹, Quanxi Jia⁴, Jianshi Zhou¹, Yusheng Zhao³, John B Goodenough⁵

Affiliations

¹ Materials research program and the Texas Materials Institute, University of Texas at Austin, Austin, TX, 78712, USA.
² School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, P.R. China.
³ High Pressure Science and Engineering Center, University of Nevada, Las Vegas, NV, 89154, USA.
⁴ Center for Integrated Nanotechnologies, Las Los Alamos National Laboratory, Los Alamos, NM, 87545, USA.
⁵ Materials research program and the Texas Materials Institute, University of Texas at Austin, Austin, TX, 78712, USA. jgoodenough@mail.utexas.edu.

PMID: 27356953
DOI: 10.1002/anie.201604554

Abstract

A fluorine-doped antiperovskite Li-ion conductor Li2 (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 Li2 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 Li2 OHCl. An all-solid-state Li/LiFePO4 with F-doped Li2 OHCl as the solid electrolyte showed good cyclability and a high coulombic efficiency over 40 charge/discharge cycles.

Keywords: all-solid-state battery; antiperovskite; lithium-ion battery; solid electrolyte.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.