Journal
RSC ADVANCES
Volume 3, Issue 21, Pages 7713-7717Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra40232k
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Funding
- 863 Project [2011AA050517]
- NSFC [51002133]
- Innovation Team Project of Zhejiang Province [2009R50005]
- Fundamental Research Funds for the central Universities
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We demonstrate the large-area synthesis of NixSiy-SiGe core-shell nanowire arrays on a Ni foam via chemical vapor deposition and subsequent co-sputtering methods. When used as the anode of Li-ion batteries, the NixSiy-SiGe nanowire arrays show high reversible capacity and good rate capability compared to planar SiGe layers and NixSiy-Si core-shell nanowires. The good adhesion and contact of the core-shell nanowires with the current collector, and the integration of Ge which can greatly improve the conductivity and lithium-ion-diffusivity in the SiGe layer, may be responsible for the enhanced performance.
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