title: A Plastic-Crystal Electrolyte Interphase for All-Solid-State Sodium Batteries.
abstract: The development of all-solid-state rechargeable batteries is plagued by a large interfacial resistance between a solid cathode and a solid electrolyte that increases with each charge-discharge cycle. The introduction of a plastic-crystal electrolyte interphase between a solid electrolyte and solid cathode particles reduces the interfacial resistance, increases the cycle life, and allows a high rate performance. Comparison of solid-state sodium cells with 1) solid electrolyte Na3Zr2(Si2PO4) particles versus 2) plastic-crystal electrolyte in the cathode composites shows that the former suffers from a huge irreversible capacity loss on cycling whereas the latter exhibits a dramatically improved electrochemical performance with retention of capacity for over 100 cycles and cycling at 5 C rate. The application of a plastic-crystal electrolyte interphase between a solid electrolyte and a solid cathode may be extended to other all-solid-state battery cells.
authors.affiliation: Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA.
authors.forename: Hongcai
authors.initials: H
authors.lastname: Gao
authors.affiliation: Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA.
authors.forename: Leigang
authors.initials: L
authors.lastname: Xue
authors.affiliation: Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA.
authors.forename: Sen
authors.initials: S
authors.lastname: Xin
authors.affiliation: Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA.
authors.forename: Kyusung
authors.initials: K
authors.lastname: Park
authors.affiliation: Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA.
authors.forename: John B
authors.identifier: 0000-0001-9350-3034
authors.initials: JB
authors.lastname: Goodenough
keywords: interfacial resistances; plastic crystals; sodium batteries; solid electrolytes; solid-state batteries