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Keywords:

  • anodes;
  • lithium-ion batteries;
  • nanomembranes;
  • nanotubes;
  • silicon
Thumbnail image of graphical abstract

Rolling their own: Naturally rolled-up C/Si/C trilayer nanomembranes (see scheme) exhibit a high reversible capacity of about 2000 mAh g−1 at 50 mA g−1, and 100 % capacity retention at 500 mA g−1 after 300 cycles. This technique is general and could be applied to the fabrication of other battery materials that undergo large volume changes.