Direct observation of lithium staging in partially delithiated LiFePO 4 at atomic resolution

Lin Gu, Changbao Zhu, Hong Li, Yan Yu, Chilin Li, Susumu Tsukimoto, Joachim Maier, Yuichi Ikuhara

    Research output: Contribution to journalArticlepeer-review

    191 Citations (Scopus)


    Lithium ions in LiFePO4 were observed directly at atomic resolution by an aberration-corrected annular-bright-field scanning transmission electron microscopy technique. In addition, it was found in partially delithiated LiFePO4 that the remaining lithium ions preferably occupy every second layer, along the b axis, analogously to the staging phenomenon observed in some layered intercalation compounds. This new finding challenges previously proposed LiFePO4/FePO4 two-phase separation mechanisms.

    Original languageEnglish
    Pages (from-to)4661-4663
    Number of pages3
    JournalJournal of the American Chemical Society
    Issue number13
    Publication statusPublished - 2011 Apr 6

    ASJC Scopus subject areas

    • Catalysis
    • Chemistry(all)
    • Biochemistry
    • Colloid and Surface Chemistry

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