Abstract
Hierarchical CuO hollow microspheres (2–3μm) have been successfully prepared via a facile hydrothermal process on a large scale by using cupric acetate as a reagent in the presence of polyvinylpyrrolidone. The hollow sphere composed by many nanorods with wall thickness of 400nm. The surface area of the hollow CuO microspheres measured by a BET-nitrogen adsorption method is 25.7m2/g. It is also found that such unique hierarchical architecture shows excellent electrochemical performance for lithium ion batteries.
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