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Issue 103, 2016, Issue in Progress
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SiOx and carbon double-layer coated Si nanorods as anode materials for lithium-ion batteries

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Abstract

SiOx and carbon double-layer coated Si nanorods (SNs@SiOx/C) were prepared by acid etching Si–Al alloy microspheres, followed by chemical thermal decomposition vapour deposition (TVD). The SNs@SiOx/C composite with 22.7% carbon delivers a specific capacity of 813.1 mA h g−1 for the first cycle at a current density of 400 mA g−1 with a coulombic efficiency of 68.3%. The SNs@SiOx/C composite also exhibits excellent cycling stability with a reversible capacity of 779 mA h g−1 over 300 cycles corresponding to a high capacity retention of 95.8%. The double-layer structure of native SiOx and carbon effectively controls the volume expansion of the SNs, prevents the exposure of SNs to the electrolyte and also enhances electronic conductivity.

Graphical abstract: SiOx and carbon double-layer coated Si nanorods as anode materials for lithium-ion batteries

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Publication details

The article was received on 31 Aug 2016, accepted on 15 Oct 2016 and first published on 17 Oct 2016


Article type: Paper
DOI: 10.1039/C6RA21810E
Citation: RSC Adv., 2016,6, 101008-101015
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    SiOx and carbon double-layer coated Si nanorods as anode materials for lithium-ion batteries

    Y. Sun, L. Fan, W. Li, Y. Pang, J. Yang, C. Wang and Y. Xia, RSC Adv., 2016, 6, 101008
    DOI: 10.1039/C6RA21810E

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