Improving the cyclability of silicon anodes for lithium-ion batteries using a simple pre-lithiation method

K. H. Kim, J. Shon, H. Jeong, H. Park, S. J. Lim, J. S. Heo

    Research output: Contribution to journalArticlepeer-review

    92 Citations (Scopus)

    Abstract

    Despite intense studies into silicon anode materials, the large volume expansion of silicon remains a significant problem that reduces battery performance and shortens battery life. In this paper, a procedure to increase the cycle life of the silicon anode in full-cell configuration using a simple pre-lithiation method is proposed. By precisely controlling the thickness of the pre-deposited lithium through evaporation, the volume change of the silicon-containing anodes can be effectively reduced during discharge. A coin-cell fabricated with a high-capacity cathode and the pre-lithiated silicon–graphite anode shows improvements in cycling performance, as well as a higher discharge capacity. Electrochemical and microscopic analysis confirm that pre-lithiation successfully suppresses the volumetric changes. Thus, this work provides an effective method for the preparation of long-cycle-life Li-ion batteries containing silicon-based anodes.

    Original languageEnglish
    Article number228066
    JournalJournal of Power Sources
    Volume459
    DOIs
    Publication statusPublished - 2020 May 31

    Bibliographical note

    Publisher Copyright:
    © 2020 Elsevier B.V.

    Keywords

    • Cycling performance
    • Lithium-ion batteries
    • Pre-lithiation
    • Silicon anode
    • Silicon-graphite

    ASJC Scopus subject areas

    • Renewable Energy, Sustainability and the Environment
    • Energy Engineering and Power Technology
    • Physical and Theoretical Chemistry
    • Electrical and Electronic Engineering

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