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Synthesis of nanostructured SnO2/C microfibers with improved performances as anode material for Li-ion batteries.

Authors
Type
Published Article
Journal
Journal of Nanoscience and Nanotechnology
1533-4880
Publisher
American Scientific Publishers
Publication Date
Volume
12
Issue
3
Pages
2581–2585
Identifiers
PMID: 22755093
Source
Medline

Abstract

Nanostructured SnO2/C microfibers were prepared by thermal decomposition of tin alginate fibers produced via wet-spinning technique. Results of X-ray diffraction and scanning electron microscopy show that the as-obtained SnO2/C microfibers consist of nano-sized SnO2 crystals with a mean diameter of 10-15 nm. Transmission electron microscopy visualization reveals that the composite fibers exhibit a porous structure consisting of both micropores and mesopores. Electrochemical evaluations of cyclic voltammetry and galvanostatic charge-discharge indicate that the SnO2/C microfibers possess a high capacity and good rate capability compared with commercial SnO2. The improved performances of SnO2/C fibers can be attributed to the nano-size of SnO2 particles dispersed in carbon matrix and the existing nanopores in the SnO2/C microfibers.

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