Journal
ACS NANO
Volume 4, Issue 6, Pages 3187-3194Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn100740x
Keywords
graphene; cobalt oxide; nanomaterial; anode; lithium-ion batteries; cyclic performance
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Funding
- Ministry of Science and Technology of China [2006CB932703]
- National Science Foundation of China [50872136, 50921004]
- Chinese Academy of Sciences [KJCX2-YW-231]
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We report a facile strategy to synthesize the nanocomposite of Co3O4 nanoparticles anchored on conducting graphene as an advanced anode material for high-performance lithium-ion batteries. The Co3O4 nanoparticles obtained are 10-30 nm in size and homogeneously anchor on graphene sheets as spacers to keep the neighboring sheets separated. This Co3O4/graphene nanocomposite displays superior Li-battery performance with large reversible capacity, excellent cyclic performance, and good rate capability, highlighting the importance of the anchoring of nanopartides on graphene sheets for maximum utilization of electrochemically active Co3O4 nanopartides and graphene for energy storage applications in high-performance lithium-ion batteries.
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