Journal
JOURNAL OF POWER SOURCES
Volume 219, Issue -, Pages 89-93Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2012.07.047
Keywords
Tin-graphitic mesoporous carbon; Solid-liquid grinding/templating; Anode materials; Lithium ion batteries
Funding
- China Postdoctoral Science Foundation [20100480534, 201104236]
- Shanghai Pujiang Rencai Project [09PJ1401400]
- National Natural Science Foundation of China [21103024]
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New Sn-C nanocomposite with metallic tin nanocrystals embedded into graphitic mesoporous carbon walls has been synthesized via a simple one-step solid-liquid grinding/templating route. X-ray diffraction, nitrogen adsorption-desorption, transmission electron microscopy and thermogravimetric analysis techniques are used to characterize the samples. It is observed that high content of metallic tin nanocrystals with the sizes of 3-5 nm are well dispersed into the highly conductive graphitic carbon walls, and synthesized tin graphitic mesoporous carbon (Sn-GMC) nanocomposite possesses ordered 2D hexagonal mesostructures with moderate surface area, large pore volume and hierarchical porosity. Due to its novel structures, the Sn-GMC nanocomposite exhibits high initial coulombic efficiency, excellent cyclability and rate performance when employed as an anode material in lithium ion batteries. (C) 2012 Elsevier B.V. All rights reserved.
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