Microstructure and electrochemical properties of rapidly solidified Si–Ni alloys as anode for lithium-ion batteries

Nurzhan Umirov, Deok Ho Seo, Taekeun Kim, Hyang Yeon Kim, Sung Soo Kim

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    This paper reports an electrochemically highly reversible Si–Ni alloy based electrode through the microstructure and composition analysis using XRD and HR-TEM combined with EDS. Nano-Si (∼200 nm) embedded in the inactive NiSi2/NiSi matrix synthesized using industrial-scale rapid solidification process (RSP). In addition, comprehensive analysis of HR-TEM images, dQ/dV and OCV plots provides powerful insights into the cycle life degradation of Si-alloys caused by the material state change upon cycling.

    Original languageEnglish
    Pages (from-to)351-360
    Number of pages10
    JournalJournal of Industrial and Engineering Chemistry
    Volume71
    DOIs
    Publication statusPublished - Mar 25 2019

    Keywords

    • Anode
    • Li-ion battery
    • Melt-spinning
    • Phase diagram
    • Silicon-based alloy

    ASJC Scopus subject areas

    • Chemical Engineering(all)

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