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Ultrafine SiOx/C nanospheres and their pomegranate-like assemblies for high-performance lithium storage

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Abstract

The application of silicon oxide (SiOx)-based anode materials in lithium-ion batteries is hampered by their low conductivity and large volume expansion. To tackle both issues, ultrafine SiOx/C composite nanospheres with a uniform diameter of ∼40 nm were fabricated through a tri-component co-assembly approach. The ultrafine SiOx/C nanospheres demonstrated a high specific capacity of 895 mA h g−1 after 200 cycles at 200 mA g−1. At a high current density of 1 A g−1, a capacity of 828 mA h g−1 could be achieved after 1000 cycles. The ultrafine SiOx/C nanospheres were further assembled into pomegranate-like assemblies through spray drying. The resultant pomegranate-like structure manifested a discharge capacity of 1024 mA h g−1 after 200 cycles at 500 mA g−1.

Graphical abstract: Ultrafine SiOx/C nanospheres and their pomegranate-like assemblies for high-performance lithium storage

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Publication details

The article was received on 01 May 2018, accepted on 09 Jul 2018 and first published on 10 Jul 2018


Article type: Paper
DOI: 10.1039/C8TA03987A
Citation: J. Mater. Chem. A, 2018, Advance Article
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    Ultrafine SiOx/C nanospheres and their pomegranate-like assemblies for high-performance lithium storage

    Q. Yu, P. Ge, Z. Liu, M. Xu, W. Yang, L. Zhou, D. Zhao and L. Mai, J. Mater. Chem. A, 2018, Advance Article , DOI: 10.1039/C8TA03987A

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