Charge-Transfer Complexes for Solid-State Li+Conduction

Kan Hatakeyama-Sato, Momoka Umeki, Toshiki Tezuka, Kenichi Oyaizu

Research output: Contribution to journalArticle

Abstract

Contradictory to the conventional understanding of solid-state ionics, we find that some organic crystals are highly ion conducting (>10-4 S/cm at room temperature). Through the microparticles of charge-transfer (CT) complexes, dissociated lithium ions move readily. Fast conduction is observed for a wide variety of compounds that form CT complexes, irrespective of the functional groups. Automatic relationship analysis via machine learning indicates the importance of polarization of the CT complexes for the ionic conduction. The decoupling system, where ion transport is not dominated by the segmental motion of media molecules, paves the way for achieving superionic properties in organic monomeric and polymeric conductors.

Original languageEnglish
Pages (from-to)2211-2217
Number of pages7
JournalACS Applied Electronic Materials
Volume2
Issue number7
DOIs
Publication statusPublished - 2020 Jul 28

Keywords

  • charge-transfer complexes
  • lithium-ion batteries
  • organic electrochemistry
  • organic electrolytes
  • solid-state Liconductors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Electrochemistry

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