Sub-100 nm hollow SnO2@C nanoparticles as anode material for lithium ion batteries and significantly enhanced cycle performances |
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Authors: | Shuang-Lei Yang Bang-Hong Zhou Mei Lei Lan-Ping Huang Jun Pan Wei Wu Hong-Bo Zhang |
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Institution: | 1.State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China;2.Laboratory of Printable Functional Nanomaterials and Printing Electronics, School of Printing and Packaging, Wuhan University, Wuhan 430072, China;3.Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR 999077, China |
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Abstract: | Rational designing and controlling of nanostructures is a key factor in realizing appropriate properties required for the high-performance energy fields. In the present study, hollow SnO2@C nanoparticles (NPs) with a mean size of 50 nm have been synthesized in large-scale via a facile hydrothermal approach. The morphology and composition of as-obtained products were studied by various characterized techniques. As an anode material for lithium ion batteries (LIBs), the as-prepared hollow SnO2@C NPs exhibit significant improvement in cycle performances. The discharge capacity of lithium battery is as high as 370 mAh g-1, and the current density is 3910 mA g-1(5 C) after 573 cycles. Furthermore, the capacity recovers up to 1100 mAh g-1 at the rate performances in which the current density is recovered to 156.4 mA g-1(0.2 C). Undoubtedly, sub-100 nm SnO2@C NPs provide significant improvement to the electrochemical performance of LIBs as superior-anode nanomaterials, and this carbon coating strategy can pave the way for developing high-performance LIBs. |
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Keywords: | Tin oxide nanoparticles Carbon coating Lithium ion batteries Anode nanomaterials Size-controllable synthesis |
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