A mesoporous iron-based fluoride cathode of tunnel structure for rechargeable lithium batteries

Chilin Li, Lin Gu, Jianwei Tong, Susumu Tsukimoto, Joachim Maier

    Research output: Contribution to journalArticle

    120 Citations (Scopus)

    Abstract

    A fluoride-based cathode (FeF3·0.33H2O) for lithium batteries, the synthesis of which has been reported recently (C. L. Li et al. Adv. Mater. 2010, 22, 3650), is described in terms of structure, morphology, and performance. A self-assembled mesoporous morphology connected with a high specific surface area is obtained through the soft template role of the ionic liquid. The fluoride exhibits a one-dimensional tunnel structure produced by continuous hexagonal cavities, in which hydration water molecules are located. The high Li-intercalation activity of carbon-free FeF 3·0.33H2O is expected to be associated with various factors, including electrolyte-infiltratable mesoporosity, wide Li +-insertable channels, and medium conductivities. A single solid-solution reaction mechanism is indicated by potentiostatic intermittent titration technique and ex situ X-ray diffraction at different reactive potentials.

    Original languageEnglish
    Pages (from-to)1391-1397
    Number of pages7
    JournalAdvanced Functional Materials
    Volume21
    Issue number8
    DOIs
    Publication statusPublished - 2011 Apr 22

    Keywords

    • iron-based fluoride
    • lithium batteries
    • mesoporous morphology
    • tunnel structure

    ASJC Scopus subject areas

    • Chemistry(all)
    • Materials Science(all)
    • Condensed Matter Physics

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