Journal
NANOSCALE
Volume 5, Issue 21, Pages 10376-10383Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3nr02635c
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Funding
- Research Grants Council [414612]
- American Chemical Society Petroleum Research Fund [51311-DNI10]
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A configuration of three-dimensional Ni-Si nanocable array anodes is proposed to overcome the severe volume change problem of Si during the charging-discharging process. In the fabrication process, a simple and low cost electrodeposition is employed to deposit Si instead of the common expansive vapor phase deposition methods. The optimum composite nanocable array electrode achieves a high specific capacity similar to 1900 mA h g(-1) at 0.05 C. After 100 cycles at 0.5 C, 88% of the initial capacity (similar to 1300 mA h g(-1)) remains, suggesting its good capacity retention ability. The high performance of the composite nanocable electrode is attributed to its excellent adhesion of the active material on the three-dimensional current collector and short ionic/electronic transport pathways during cycling.
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