Abstract
Carbon-coated CuO hollow spheres with a thin layer of CuO nanoparticles anchored to the outer carbon layer were synthesized using a one-step, fast, scalable, and low-cost aerosol spray pyrolysis method. The hollow spherical particles provide a capacity of 670 mA g−1 at 1 C and maintain the capacity for 300 cycles and 400 mA h g−1 at 50 C. This is the best performance for CuO anodes reported to date. The exceptional electrochemical performance is attributed to the unique architecture of the carbon-coated hollow structure.
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