Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 680, Issue -, Pages 109-115Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.04.128
Keywords
Room-temperature synthesis; Colloidal SnO2 QDs; Ex-situ deposition; SnO2-CNT nanocomposite; Lithium storage properties
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Funding
- National Science Foundation of China [51402232]
- Fundamental Research Funds for the Central Universities in China
- Natural Science Basis Research Plan in Shaanxi Province of China [2015JQ5131]
- Open Fund of the State Key Laboratory of Luminescent Materials and Devices (South China University of Technology) [2016-skllmd-04]
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Colloidal SnO2 quantum dots (QDs) have been successfully prepared via a facile aqueous wet-chemical synthetic approach using tin dichloride as tin source and thiourea as accelerating and stabilizing agent under magnetic stirring at room temperature. The SnO2 QDs with average size of similar to 3.5 nm are well-dispersed in the aqueous solution with high stability. A facile ex-situ deposition of SnO2 QDs on carbon nanotubes (CNTs) is developed, allowing large loading amount of SnO2 QDs on the CNTs with uniform distribution. When used as anode material for lithium ion batteries, the as-prepared SnO2-CNT nano-composites exhibit superior lithium storage properties, delivering a stable discharge capacity of 845 mAh/g at 100 mA/g after 90 cycles. More importantly, the novel synthetic strategy is promising for the cost-effective and large-scale fabrication of SnO2-CNT nanocomposites as high-performance anodes for electrochemical energy-storage. (C) 2016 Elsevier B.V. All rights reserved.
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