MnO nanorods on graphene as an anode material for high capacity lithium ion batteries
The MnO/graphene hybrid nanocomposites were prepared by an in situ reduction method. The MnO 2 nanorods were attached on the graphene oxides (GOs) to form the MnO 2 /GO nanocomposites, which were reduced to the MnO/graphene hybrid under argon atmosphere. As the anode material for the lithium ion bat...
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Veröffentlicht in: | Journal of materials science 2014-02, Vol.49 (4), p.1861-1867 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The MnO/graphene hybrid nanocomposites were prepared by an in situ reduction method. The MnO
2
nanorods were attached on the graphene oxides (GOs) to form the MnO
2
/GO nanocomposites, which were reduced to the MnO/graphene hybrid under argon atmosphere. As the anode material for the lithium ion batteries, the MnO/graphene electrodes delivered a high initial charge capacity up to 747 mAh g
−1
and a stable capacity of 705.8 mAh g
−1
after 100 cycles, which is much superior to pure MnO with initial charge capacity of 456 mAh g
−1
and the stable capacity of 95.6 mAh g
−1
after 100 cycles. The scanning electron microscope images of the MnO/graphene hybrid nanocomposites after cycling demonstrated that the graphene could prevent the MnO from aggregating during the charge/discharge process. |
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ISSN: | 0022-2461 1573-4803 |
DOI: | 10.1007/s10853-013-7874-8 |