A layered P2- and O3-type composite as a high-energy cathode for rechargeable sodium-ion batteries

Shaohua Guo, Pan Liu, Haijun Yu, Yanbei Zhu, Mingwei Chen, Masayoshi Ishida, Haoshen Zhou

    Research output: Contribution to journalArticlepeer-review

    185 Citations (Scopus)

    Abstract

    A layered composite with P2 and O3 integration is proposed toward a sodium-ion battery with high energy density and long cycle life. The integration of P2 and O3 structures in this layered oxide is clearly characterized by XRD refinement, SAED and HAADF and ABF-STEM at atomic resolution. The biphase synergy in this layered P2+O3 composite is well established during the electrochemical reaction. This layered composite can deliver a high reversible capacity with the largest energy density of 640 mAh g<sup>-1</sup>, and it also presents good capacity retention over 150 times of sodium extraction and insertion.

    Original languageEnglish
    Pages (from-to)5894-5899
    Number of pages6
    JournalAngewandte Chemie - International Edition
    Volume54
    Issue number20
    DOIs
    Publication statusPublished - 2015 May 11

    Keywords

    • composite materials
    • layered structures
    • Na<inf>x</inf>MO<inf>2</inf> polytypes
    • sodium-ion cathodes

    ASJC Scopus subject areas

    • Chemistry(all)
    • Catalysis

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