Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 22, Issue 32, Pages 16318-16323Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm30805c
Keywords
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Funding
- National Natural Science Foundation of China [50872012, 21101014]
- Fundamental Research Funds for the Central Universities
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Graphene-encapsulated mesoporous metal oxides (e.g. Co3O4, Cr2O3 and NiO) as novel anode materials for lithium-ion batteries were simply synthesized by adjusting the pH of mesoporous metal oxides and graphene oxide suspensions to set values (e.g. 5-6 for metal oxides, 7-8 for graphene oxide) and mixing the two suspensions in the presence of reducing agents. These composites synthesized by this facile method exhibited superior electrochemical performance, including remarkably high capacity, high rate capability and excellent cycle performance. The improved performance may be attributed to the high dispersion of mesoporous particles separated by graphene nanosheets and the high electrical conductivity of graphene.
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