Superior cycle performance of Sn-C/graphene nanocomposite as an anode material for lithium-ion batteries

Journal Article · Wed Jun 15 00:00:00 EDT 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.03.052· OSTI ID:21580102

Xuefeng, Zhu ^[1]; Peichao, Lian ^[2]; Weishen, Yang ^[1]

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1. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 (China)
2. School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Road, Guangzhou 510640 (China)

A novel anode material for lithium-ion batteries, tin nanoparticles coated with carbon embedded in graphene (Sn-C/graphene), was fabricated by hydrothermal synthesis and subsequent annealing. The structure and morphology of the nanocomposite were characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The size of the Sn-C nanoparticles is about 50-200 nm. The reversible specific capacity of the nanocomposite is {approx}662 mAh g{sup -1} at a specific current of 100 mA g{sup -1} after 100 cycles, even {approx}417 mAh g{sup -1} at the high current of 1000 mA g{sup -1}. These results indicate that Sn-C/graphene possesses superior cycle performance and high rate capability. The enhanced electrochemical performances can be ascribed to the characteristic structure of the nanocomposite with both of the graphene and carbon shells, which buffer the volume change of the metallic tin and prevent the detachment and agglomeration of pulverized tin. - Graphical abstract: Tin nanoparticles coated with carbon embedded in graphene have been successfully fabricated by hydrothermal synthesis and subsequent annealing. This nanocomposite as an anode material for lithium-ion batteries exhibits superior cycle performance. Highlights: > A novel Sn-C/graphene nanocomposite as an anode material for lithium-ion batteries. > Carbon coating and graphene improve the cycle performance of the Sn anode material. > Possess large capacity, superior cycle performance, and high rate capability.

• OSTI ID: 21580102
• Journal Information: Journal of Solid State Chemistry, Vol. 184, Issue 6; Other Information: DOI: 10.1016/j.jssc.2011.03.052; PII: S0022-4596(11)00163-0; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANNEALING
ANODES
CARBON
ELECTRIC BATTERIES
HYDROTHERMAL SYNTHESIS
LITHIUM IONS
NANOSTRUCTURES
PARTICLES
PERFORMANCE
SCANNING ELECTRON MICROSCOPY
TIN
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
CHARGED PARTICLES
COHERENT SCATTERING
DIFFRACTION
ELECTROCHEMICAL CELLS
ELECTRODES
ELECTRON MICROSCOPY
ELEMENTS
ENERGY STORAGE SYSTEMS
ENERGY SYSTEMS
HEAT TREATMENTS
IONS
METALS
MICROSCOPY
NONMETALS
SCATTERING
SYNTHESIS