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  • Interfacial Engineering with Liquid Metal for Si-Based Hybrid Electrodes in Lithium-Ion Batteries

    Author(s)
    Hapuarachchi, Sashini NS
    Wasalathilake, Kimal C
    Siriwardena, Dumindu P
    Nerkar, Jawahar Y
    Chen, Hao
    Zhang, Shanqing
    Liu, Yang
    Zheng, Jun-chao
    Golberg, Dmitri
    O'Mullane, Anthony P
    Yan, Cheng
    Griffith University Author(s)
    Zhang, Shanqing
    Chen, Hao
    Year published
    2020
    Metadata
    Show full item record
    Abstract
    Silicon (Si) anodes suffer from severe structural instability caused by volume expansion during lithium insertion and extraction. The extensive stress generated causes delamination at the anode/current collector interface and early capacity decay. We developed a novel anode structure by introducing a liquid metal layer in between Si and the Cu current collector. Both experiments and the density functional theory (DFT) simulation indicate an increased flexibility in the hybrid structure. No visible cracking or interface delamination was observed, attributed to the self-healing effect from the liquid metal. This work introduces ...
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    Silicon (Si) anodes suffer from severe structural instability caused by volume expansion during lithium insertion and extraction. The extensive stress generated causes delamination at the anode/current collector interface and early capacity decay. We developed a novel anode structure by introducing a liquid metal layer in between Si and the Cu current collector. Both experiments and the density functional theory (DFT) simulation indicate an increased flexibility in the hybrid structure. No visible cracking or interface delamination was observed, attributed to the self-healing effect from the liquid metal. This work introduces a novel design for hybrid anodes with balanced mechanical strength and electrochemical performance.
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    Journal Title
    ACS Applied Energy Materials
    Volume
    3
    Issue
    6
    DOI
    https://doi.org/10.1021/acsaem.0c00888
    Subject
    Chemical sciences
    Science & Technology
    Physical Sciences
    Chemistry, Physical
    Energy & Fuels
    Publication URI
    http://hdl.handle.net/10072/397809
    Collection
    • Journal articles

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