Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 12, Issue 11, Pages 1467-1470Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2010.08.008
Keywords
Graphene-silicon composite; Free-standing electrode; In-situ filtration method; Lithium-ion battery
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Funding
- Australian Research Council (ARC) [DP 0987805]
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Flexible, free-standing, paper-like, graphene-silicon composite materials have been synthesized by a simple, one-step, in-situ filtration method. The Si nanoparticles are highly encapsulated in a graphene nanosheet matrix. The electrochemical results show that graphene-Si composite film has much higher discharge capacity beyond 100 cycles (708 mAh g(-1)) than that of the cell with pure graphene (304 mAh g(-1)). The graphene functions as a flexible mechanical support for strain release, offering an efficient electrically conducting channel, while the nanosized silicon provides the high capacity. (C) 2010 Elsevier B.V. All rights reserved.
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