Ni added si-al alloys with enhanced Li + storage performance for lithium-ion batteries

Nurzhan Umirov, Deok Ho Seo, Kyu Nam Jung, Hyang Yeon Kim, Sung Soo Kim

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    Abstract

    Here, we report on nanocrystalline Si-Al-M (M = Fe, Cu, Ni, Zr) alloys for use as an anode for lithium-ion batteries, which were fabricated via a melt-spinning method. Based on the XRD and TEM analyses, it was found that the Si-Al-M alloys consist of nanocrystalline Si grains surrounded by an amorphous matrix phase. Among the Si-Al-M alloys with different metal composition, Ni-incorporated Si-Al-M alloy electrode retained the high discharge capacity of 2492 mAh/g and exhibited improved cyclability. The superior Li + storage performance of Si-Al-M alloy with Ni component is mainly responsible for the incorporated Ni, which induces the formation of ductile and conductive inactive matrix with crystalline Al phase, in addition to the grain size reduction of active Si phase.

    Original languageEnglish
    Pages (from-to)82-88
    Number of pages7
    JournalJournal of Electrochemical Science and Technology
    Volume10
    Issue number1
    DOIs
    Publication statusPublished - Mar 1 2019

    Keywords

    • Amorphous matrix
    • Li-ion battery
    • Melt spinning
    • Microstructure
    • Si-Al alloy anode

    ASJC Scopus subject areas

    • Electrochemistry

    Fingerprint Dive into the research topics of 'Ni added si-al alloys with enhanced Li <sup>+</sup> storage performance for lithium-ion batteries'. Together they form a unique fingerprint.

    Cite this