Journal
NANOSCALE
Volume 8, Issue 7, Pages 4121-4126Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr07996a
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Funding
- National Basic Research Program of China [2014CB239700]
- National Natural Science Foundation of China [21336003]
- Science and Technology Commission of Shanghai Municipality [14DZ2250800]
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Hierarchically structured carbon coated SnO2 nanoparticles well-anchored on the surface of a CNT (C-SnO2/CNT) material were synthesized by a facile hydrothermal process and subsequent carbonization. The as-obtained C-SnO2/CNT hybrid, when applied as an anode material for lithium ion batteries (LIBs), showed a high reversible capacity up to 1572 mA h g(-1) at 200 mA g(-1) with a superior rate capability (685 mA h g(-1) at 4000 mA g(-1)). Even after 100 charge/discharge cycles at 1000 mA g(-1), a specific capacity of 1100 mA h g(-1) can still be maintained. Such impressive electrochemical performance can be mainly attributed to the hierarchical sandwiched structure and strong synergistic effects of the ultrafine SnO2 nanoparticles and the carbon coating, and thus presents this material a promising anode material for LIBs.
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