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Electrodeposited three-dimensional Ni-Si nanocable arrays as high performance anodes for lithium ion batteries

  • Author(s): Liu, H
  • Hu, L
  • Meng, YS
  • Li, Q
  • et al.

Published Web Location

http://pubs.rsc.org/en/content/articlepdf/2013/nr/c3nr02635c
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Creative Commons Attribution-NonCommercial 4.0 International Public License
Abstract

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 ∼1900 mA h g-1at 0.05 C. After 100 cycles at 0.5 C, 88% of the initial capacity (∼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. © 2013 The Royal Society of Chemistry.

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