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Keywords:

  • anode materials;
  • hollow porous nanostructures;
  • lithium storage;
  • silicon;
  • silver
Thumbnail image of graphical abstract

Easy to hollow: A hollow porous Si nanocomposite with Ag nanoparticles (NPs) is prepared (see scheme; PS=polystyrene, HP=hollow porous). The free volume in the HPSi structure effectively cushioned the volume change in Li–Si alloying and de-alloying reactions, giving an impressive performance as a high-capacity anode for lithium-ion batteries.