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Keywords:

  • branched nanostructures;
  • controlled oxidation;
  • Cu2O nanocubes;
  • hollow nanostructures;
  • lithium-ion battery
Thumbnail image of graphical abstract

A procedure for gram-scale synthesis of monodisperse Cu2O nanocubes by a simple polyol process is demonstrated. The nanocubes are subsequently oxidized to form CuO hollow cubes, spheres, and urchin-like particles, through a sequential dissolution–precipitation process. The CuO urchin-like particles exhibited excellent electrochemical performance and stability, superior to those of hollow structures, for lithium-ion battery anode materials.