Abstract
An improved structure of nano-sized Si-Cu2O composite material has been obtained employing solvothermal method. The enhanced silicon-copper electrode of higher conductivity has been produced by further electrochemical reduction. The charge-discharge curves, cycling performance were analyzed in detail. The first charge/discharge profile behaviour of silicon-cuprous oxide was also discussed. The composite electrode can accommodate the serious volume expansion of silicon nano particles and strengthen the electrical contact between active silicon and copper foil substrate. The electrode exhibits a high efficiency of 97.9% in 57th cycle afterwards and a capacity retention of 80.2% after 60 cycles with an average fading ratio of ~0.33%.
Original language | English |
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Pages (from-to) | 8019-8029 |
Number of pages | 11 |
Journal | International Journal of Electrochemical Science |
Volume | 8 |
Issue number | 6 |
State | Published - Jun 2013 |
Externally published | Yes |
Keywords
- Anode
- Cuprous oxide
- Lithium-ion battery
- Silicon