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Silicon nanowires coated with copper layer as anode materials for lithium-ion batteries
- Source :
-
Journal of Power Sources . Aug2011, Vol. 196 Issue 16, p6657-6662. 6p. - Publication Year :
- 2011
-
Abstract
- Abstract: Silicon nanowires (Si NWs) with copper-coating as high capacity and improved cycle-life anode for lithium-ion batteries have been successfully prepared by chemical vapor deposition and magnetron sputtering methods. The morphology, structure, composition as well as the electrochemical performance of copper-coated Si NWs is characterized in detail. The results indicate that the copper-coated Si NWs electrodes show an initial coulombic efficiency of 90.3% when cycling between 0.02V and 2.0V (versus Li/Li+) at a current density of 210mAg−1. The copper-coated Si NWs electrodes exhibit a capacity as high as 2700mAhg−1 at the first cycle. They also show a good capacity retention and excellent rate capability compared with pristine and carbon-coated Si NWs. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 03787753
- Volume :
- 196
- Issue :
- 16
- Database :
- Academic Search Index
- Journal :
- Journal of Power Sources
- Publication Type :
- Academic Journal
- Accession number :
- 61174975
- Full Text :
- https://doi.org/10.1016/j.jpowsour.2010.12.075