Rhombohedral Prussian white as cathode for rechargeable sodium-ion batteries

Long Wang, Jie Song, Ruimin Qiao, L. Andrew Wray, Muhammed A. Hossain, Yi De Chuang, Wanli Yang, Yuhao Lu, David Evans, Jong Jan Lee, Sean Vail, Xin Zhao, Motoaki Nishijima, Seizoh Kakimoto, John B. Goodenough

    Research output: Contribution to journalArticlepeer-review


    A novel air-stable sodium iron hexacyanoferrate (R-Na1.92Fe[Fe(CN)6]) with rhombohedral structure is demonstrated to be a scalable, low-cost cathode material for sodium-ion batteries exhibiting high capacity, long cycle life, and good rate capability. The cycling mechanism of the iron redox is clarified and understood through synchrotron-based soft X-ray absorption spectroscopy, which also reveals the correlation between the physical properties and the cell performance of this novel material. More importantly, successful preparation of a dehydrated iron hexacyanoferrate with high sodium-ion concentration enables the fabrication of a discharged sodium-ion battery with a non-sodium metal anode, and the manufacturing feasibility of low cost sodium-ion batteries with existing lithium-ion battery infrastructures has been tested.

    Original languageEnglish (US)
    Pages (from-to)2548-2554
    Number of pages7
    JournalJournal of the American Chemical Society
    Issue number7
    StatePublished - Feb 25 2015

    ASJC Scopus subject areas

    • Catalysis
    • General Chemistry
    • Biochemistry
    • Colloid and Surface Chemistry


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