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Issue 43, 2010
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Microwave-assisted synthesis of a Co3O4graphene sheet-on-sheet nanocomposite as a superior anode material for Li-ion batteries

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Abstract

This paper reports the microwave-assisted synthesis of a Co3O4graphene sheet-on-sheet nanostructure. This sheet-on-sheet nanocomposite showed an excellent high rate capability and highly reversible large capacity at common rate. A capacity of 931 mA h g−1 was observed at a large current rate of 5C (4450 mA g−1), which was still larger than the theoretical capacity of Co3O4 (890 mAh g−1). The substantially improved electrochemical properties were ascribed to the unique sheet-on-sheet nanostructure. Co3O4 nanosheets were tightly stacked with graphene nanosheets (GNS), therefore volume changes of Co3O4 materials were accommodated in the presence of GNS. On the other hand, sheet-like Co3O4 was very effective to prevent the reassembly of GNS to graphite platelets, thus preserving GNS advantages during repetitive cycling.

Graphical abstract: Microwave-assisted synthesis of a Co3O4–graphene sheet-on-sheet nanocomposite as a superior anode material for Li-ion batteries

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Publication details

The article was received on 23 May 2010, accepted on 21 Jul 2010 and first published on 20 Sep 2010


Article type: Paper
DOI: 10.1039/C0JM01573C
Citation: J. Mater. Chem., 2010,20, 9735-9739
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    Microwave-assisted synthesis of a Co3O4graphene sheet-on-sheet nanocomposite as a superior anode material for Li-ion batteries

    S. Q. Chen and Y. Wang, J. Mater. Chem., 2010, 20, 9735
    DOI: 10.1039/C0JM01573C

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