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  • Low-cost urchin-like silicon-based anode with superior conductivity for lithium storage applications

    Author(s)
    Guan, Peng
    Zhang, Wei
    Li, Chengyu
    Han, Na
    Wang, Xuechen
    Li, Qiaofeng
    Song, Guojun
    Peng, Zhi
    Li, Jianjiang
    Zhang, Lei
    Zhu, Xiaoyi
    Griffith University Author(s)
    ZHANG, LEI
    Year published
    2020
    Metadata
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    Abstract
    Poor rate and cycling performance are the most critical drawbacks for Si-based anodes on account of their inferior conductivity and colossal volumetric expansion during lithiation/delithiation. Here we report the fabrication of structurally-integrated urchin-like Si anode, which provides prominent structural stability and distinguished electron and ion transmission pathways for lithium storage. The inexpensive solid Si waste from organosilane industry after acid-washed and further ball-milling serves as the pristine Si-source in this work. Carbon nanotubes (CNTs) are in-situ grown outside Si microparticles, resulting in an ...
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    Poor rate and cycling performance are the most critical drawbacks for Si-based anodes on account of their inferior conductivity and colossal volumetric expansion during lithiation/delithiation. Here we report the fabrication of structurally-integrated urchin-like Si anode, which provides prominent structural stability and distinguished electron and ion transmission pathways for lithium storage. The inexpensive solid Si waste from organosilane industry after acid-washed and further ball-milling serves as the pristine Si-source in this work. Carbon nanotubes (CNTs) are in-situ grown outside Si microparticles, resulting in an urchin-like structure (Si/CNTs). The optimized Si/CNTs presents ascendant invertible capacity and rate performance, achieving up to 920 mAh g−1 beyond 100 cycles at 100 mA g −1, and a capacity of 606.2 mAh g−1 at 1 A g −1 after long cycling for 1000 cycles. The proposed scalable synthesis can be adopted to advance the performance of other electrode materials with inferior conductivity and enormous volume expansions during cycling.
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    Journal Title
    Journal of Colloid and Interface Science
    Volume
    575
    DOI
    https://doi.org/10.1016/j.jcis.2020.04.082
    Subject
    Physical sciences
    Chemical sciences
    Engineering
    Science & Technology
    Chemistry, Physical
    Chemistry
    Superior conductivity
    Publication URI
    http://hdl.handle.net/10072/400848
    Collection
    • Journal articles

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