Kinetics-driven high power Li-ion battery with a-Si/NiSix core-shell nanowire anodes

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We report amorphous-Si nanowire shell anodes, supported by NiSix nanowire cores, by catalyst-free two-step SiH4 chemical vapor deposition, where the metallic core acts as a mechanical supporter and a kinetically unlimited charge supplier. We have achieved highly reversible capacitance of over 3000 mAh g(-1) even at a 2C rate, with stable cyclic retention which stems from the altered electrochemical reactions with relatively small volume expansion routes by a kinetic effect.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2011
Language
English
Article Type
Article
Keywords

RECHARGEABLE LITHIUM BATTERIES; HIGH-CAPACITY; NANOSTRUCTURED SILICON; CARBON; ELECTRODES; STORAGE; GROWTH

Citation

CHEMICAL SCIENCE, v.2, no.6, pp.1090 - 1093

ISSN
2041-6520
DOI
10.1039/c0sc00628a
URI
http://hdl.handle.net/10203/238883
Appears in Collection
MS-Journal Papers(저널논문)
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