Journal
JOURNAL OF POWER SOURCES
Volume 253, Issue -, Pages 287-293Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2013.12.034
Keywords
Periodic structures; Tin; Graphene nanosheets; Lithium ion battery
Funding
- Nature Science Foundation of China [51204209, 51274240]
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A simple approach has been reported to prepare Sn nanoparticle/graphene nanosheets (G/Sn) as an anode material for lithium ion batteries. Sn nanoparticles with size of similar to 5 nm are directly grown and uniformly distributed between graphene interlayers. Graphene nanosheets act as the reducing agent and supporting matrix. Optimized G/Sn electrode with appropriate Sn content exhibits improved capacity (838.4 mAh g(-1) at 0.1 A g(-1) after 100 cycles) and cycling stability (684.5, 639.7, 5523 and 359.7 mAh g(-1) at 0.5, 1, 2 and 5 A g(-1) respectively after 100 cycles). The enhanced electrochemical performance should be related to the designed layer-by-layer (G/Sn/G) structure, the synergism between the elastomeric space and large area of graphene, and the excellent conductivity of the Sn nanoparticles. (C) 2013 Elsevier B.V. All rights reserved.
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