Structure and ionic conductivity in lithium garnets

Edmund J. Cussen

Research output: Contribution to journalArticle

168 Citations (Scopus)
185 Downloads (Pure)

Abstract

Garnets are capable of accommodating an excess of lithium cations beyond that normally found in this prototypical structure. This excess lithium is found in a mixture of coordination environments with considerable positional and occupational disorder and leads to ionic conductivity of up to 4×10-4 S cm-1 at room temperature. This high value for total conductivity, combined with excellent thermal and (electro)chemical resistance makes these candidate materials for operation in all solid-state batteries. This review looks at garnets with a wide range of stoichiometries and lithium concentrations and the impact of complex lithium distributions and crystallographic order/disorder transitions on the transport properties of these materials.
Original languageEnglish
Pages (from-to)5167-5173
Number of pages7
JournalJournal of Materials Chemistry
Volume20
Issue number25
DOIs
Publication statusPublished - 7 Jul 2010

Keywords

  • materials science
  • ionic conductivity
  • lithium garnets

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