Journal
NANO RESEARCH
Volume 10, Issue 9, Pages 2966-2976Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-017-1507-5
Keywords
C@SnOX@C; hollow nanostructure; nanosheets; carbon coating; anodes
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Funding
- National Natural Science Foundation of China [21471096, 21371116]
- Program for Innovative Research Team in University [IRT13078]
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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 similar to 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 resorcinol-formaldehyde 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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