Hierarchical SiOx nanoconifers for Li-ion battery anodes with structural stability and kinetic enhancement

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Silicon sub-oxides, SiOx (0 < x < 1) can be regarded as a promising anode material for high performance Li-ion batteries for its unique electrochemical reactions to Li. We designed and synthesized the columnar-shape SiOx nanoconifers (0.9 < x < 1), directly self-organized on metallic NiSix nanowires (NWs) for its anodic use in Li rechargeable batteries. The half-cell incorporating SiOx nanoconifers/NiSix NW heterostructures displays good cyclic retention and rate capability, which are attributed to the structural and kinetic stability of the hierarchical SiOx nanoconifers rigidly supported by metallic NiSix core NWs by providing a reversible electrochemical route with a lower activation energy. (C) 2012 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2013-05
Language
English
Article Type
Article
Keywords

RECHARGEABLE LITHIUM BATTERIES; ELECTROCHEMICAL DEGRADATION; SILICON; NANOWIRES; COMPOSITE; PERFORMANCE; NANOSTRUCTURES; NANOCOMPOSITE; ELECTROLYTES; TRANSITION

Citation

JOURNAL OF POWER SOURCES, v.229, pp.229 - 233

ISSN
0378-7753
DOI
10.1016/j.jpowsour.2012.12.002
URI
http://hdl.handle.net/10203/238876
Appears in Collection
MS-Journal Papers(저널논문)
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