Fluorine‐Doped Antiperovskite Electrolyte for All‐Solid‐State Lithium‐Ion Batteries
- Materials research program and the Texas Materials Institute University of Texas at Austin Austin TX 78712 USA
- Materials research program and the Texas Materials Institute University of Texas at Austin Austin TX 78712 USA, School of Chemistry and Chemical Engineering Hefei University of Technology Hefei Anhui 230009 P.R. China
- High Pressure Science and Engineering Center University of Nevada Las Vegas NV 89154 USA
- Center for Integrated Nanotechnologies Las Los Alamos National Laboratory Los Alamos NM 87545 USA
Abstract 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.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 1401688
- Journal Information:
- Angewandte Chemie, Journal Name: Angewandte Chemie Vol. 128 Journal Issue: 34; ISSN 0044-8249
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English
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