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Keywords:

  • silicon;
  • carbon nanotubes;
  • nanostructure;
  • lithium-ion batteries;
  • high rate capability
Thumbnail image of graphical abstract

The concept of a hybrid nanostructured collector made of thin vertically aligned carbon nanotubes (CNTs) decorated with Si nanoparticles provides high power density anodes in lithium-ion batteries. An impressive rate capability is achieved due to the efficient electronic conduction of CNTs combined with well defined electroactive Si nanoparticles: capacities of 3000 mAh g−1 at 1.3C and 800 mAh g−1 at 15C are achieved.