Multielectron redox compounds for organic cathode quasi-solid state lithium battery

Yuki Hanyu, Toyonari Sugimoto, Yoshiyuki Ganbe, Asuna Masuda, Itaru Honma

    Research output: Contribution to journalArticlepeer-review

    51 Citations (Scopus)


    Two multielectron redox organic compounds, hexaazatrinaphthylene (3Q) and hexaazatriphenylenehexacarbonitrile (6CN) were evaluated as high energy density cathode materials of quasi-solid cells. The cathode dissolution, which has been an issue for organic cathodes, was suppressed and the cell cyclability drastically improved. 6CN, which exhibited low capacity and cyclability in conventional liquid electrolyte, was measured to possess the specific capacity of ̃420 mAh/g. The energy density of the cathode body was ̃720 Wh/kg. It was also discovered that implementation of depth-of-discharge management further improved cyclability. This study is a demonstrative case that cathode compounds deemed unusable in liquid electrolyte may turn usable in solid-state lithium cells.

    Original languageEnglish
    Pages (from-to)A6-A9
    JournalJournal of the Electrochemical Society
    Issue number1
    Publication statusPublished - 2014

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Renewable Energy, Sustainability and the Environment
    • Surfaces, Coatings and Films
    • Electrochemistry
    • Materials Chemistry


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