Effect of boron doped fullerene C60 film coating on the electrochemical characteristics of silicon thin film anodes for lithium secondary batteries
- Effect of boron doped fullerene C60 film coating on the electrochemical characteristics of silicon thin film anodes for lithium secondary batteries
- 아리; 이중기
- Fullerene; Thin Films; Boron-doped; Anodes; Lithium Secondary Batteries
- Issue Date
- Synthetic metals
- VOL 161, 158-165
- In this work, boron doped fullerene (B:C60) films were prepared by the radio frequency plasma assisted
thermal evaporation technique for use as a coating material for the silicon thin film anode in lithium
secondary batteries. Raman and XPS analyses revealed that the boron atoms were well inserted into
the fullerene film lattices. The effect of the B:C60 film on the electrochemical characteristics of the silicon
thin film was studied by charge–discharge tests, electrochemical impedance spectroscopy (EIS) and
cyclic voltammetry (CV). The B:C60 coated silicon film exhibited a high reversible capacity of more than
1200mAhg−1 when cycled 50 times between 0 and 2V at a current density of 1200mAcm−2 (1.5 C).
The film also showed good rate capacity at different current densities and a more improved coulombic
efficiency of 87.7% in the first cycle in comparison with that of the C60 coated film electrode.
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