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In the present work,we report on Li storage in spherical graphite-like BCxO3-x/C(g-BCO/C) nanostructure with an average diameter of ca.75 nm.Highly microporous g-BCO/C nanospheres with the BET specific surface area of 493.35 m2 g-1 were fabricated via simply hydrothermal carbonization process combined with one-step annealing.