A high-energy-density mixed-aprotic-aqueous sodium-air cell with a ceramic separator and a porous carbon electrode

Feng Liang, Katsuro Hayashi

    Research output: Contribution to journalArticlepeer-review

    54 Citations (Scopus)

    Abstract

    A mixed aqueous/aprotic Na-air cell that works at room temperature has been fabricated and its discharge properties have been examined experimentally as a primary cell. A dense Na3Zr2Si2PO12 ceramic with an ionic conductivity of 1.3 × 10-3 S·Ecm-1 at 25°C and a porous electrode containing Mn3O4 catalyzed carbon are used as a solid electrolyte separator and an air electrode, respectively. This cell gives a maximum output power density of 21 mW·Ecm-2 at 25°C, which is one of the best results among alkali metal-air cells reported to date. Electrochemical impedance spectroscopy reveals that a reduction in ohmic resistivity of the ceramic separator is now crucial for a further increase in power density.

    Original languageEnglish
    Pages (from-to)A1215-A1219
    JournalJournal of the Electrochemical Society
    Volume162
    Issue number7
    DOIs
    Publication statusPublished - 2015

    All Science Journal Classification (ASJC) codes

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

    Fingerprint

    Dive into the research topics of 'A high-energy-density mixed-aprotic-aqueous sodium-air cell with a ceramic separator and a porous carbon electrode'. Together they form a unique fingerprint.

    Cite this