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Co3O4/graphene nanocomposites are synthesized by a plasma-assisted treatment, and Co3O4 nanoparticles are uniformly embedded into graphene nanosheets. The nanocomposites exhibit high electrochemical performance as the anode of lithium-ion battery. The reversible capacity is up to 1368 mAh g−1 at the current density of 125 mA g−1 (about 10 h per half cycle), and maintains at 1269 mAh g−1 after 50 cycles...
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