Research Article

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2017, 10(9): 2966–2976

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https://doi.org/10.1007/s12274-017-1507-5

Flower-like C@SnOX@C hollow nanostructures with enhanced electrochemical properties for lithium storage

Yijia Wang1, Zheng Jiao2, Minghong Wu2, Kun Zheng3, Hongwei Zhang4, Jin Zou3, Chengzhong Yu4 (*), and Haijiao Zhang1 (*)

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1 Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China
2 School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
3 Materials Engineering and Centre for Microscopy and Microanalysis, The University of Queensland, Brisbane, QLD 4072, Australia
4 Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia

Keywords: C@SnOX@C, hollow nanostructure, nanosheets, carbon coating, anodes
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ABSTRACT Hollow nanostructures have attracted considerable attention owing to their large surface area, tunable cavity, and low density. In this study, a unique flower-like C@SnOX@C hollow nanostructure (denoted as C@SnOX@C-1) was synthesized through a novel one-pot approach. The C@SnOX@C-1 had a hollow carbon core and interlaced petals on the shell. Each petal was a SnO2 nanosheet coated with an ultrathin carbon layer ~2 nm thick. The generation of the hollow carbon core, the growth of the SnO2 nanosheets, and the coating of the carbon layers were simultaneously completed via a hydrothermal process using resorcinolformaldehyde resin-coated SiO2 nanospheres, tin chloride, urea, and glucose as precursors. The resultant architecture with a large surface area exhibited excellent lithium-storage performance, delivering a high reversible capacity of 756.9 mA·h·g–1 at a current density of 100 mA·g–1 after 100 cycles.
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Flower-like C@SnOX@C hollow nanostructures with enhanced electrochemical properties for lithium storage. Nano Res. 2017, 10(9): 2966–2976 https://doi.org/10.1007/s12274-017-1507-5

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