Journal
CHEMICAL ENGINEERING JOURNAL
Volume 283, Issue -, Pages 1435-1442Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2015.08.052
Keywords
Lithium-ion battery; Nitrogen doping; SnO2; Carbon nitride
Categories
Funding
- National Natural Science Foundation of China [21572269, 51303212, 51303202, 21302224, 51372277]
- National Natural Science Foundation of Shandong Province [ZR2013BQ028, ZR2013EMQ013]
- Fundamental Research Fund for the Central Universities [14CX02196A, 15CX08005A, 15CX05010A]
- Open Fund of Beijing National Laboratory for Molecular Sciences [2013019]
- Open fund of State Key Laboratory for Modification of Chemical Fibers and Polymer Materials [LK1516]
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A composite of well dispersed SnO2 nanocrystals adhered on N-doped graphene (containing 18 at% N atoms) by g-CNx coating is obtained through facile hydrothermal process and followed by high temperature treatment, which displays obviously improved electrochemical properties as an anode material in LIBs. Respectively, dicyandiamide and sulfourea are selected as the Nitrogen source and surfactant for preparing high conductive carbonic matrix and well dispersed SnO2 nanocrystals. A stable reversible capacity could be achieved which is upto 803 mAh g(-1), after 80 cycles due to the uniformity of SnO2 particles in nano-scale and firmly bonding onto N-doped graphene matrix. (C) 2015 Elsevier B.V. All rights reserved.
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