A green hydrothermal approach for the preparation of graphene/α-MnO2 3D network as anode for lithium ion battery

Graphene/α-MnO2 nanocomposites (GMC) with high performance as anode material were synthesized by a facile green procedure, in which we reduced graphene from graphene oxide and prepared the GMC simultaneously through a conventional hydrothermal route. The samples are systematically investigated by X-...

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Bibliographic Details
Published in:Electrochimica acta 2013-10, Vol.108, p.465-471
Main Authors: Zhang, Yi, Liu, Hao, Zhu, Zehua, Wong, Ka-wai, Mi, Rui, Mei, Jun, Lau, Woon-ming
Format: Article
Language:English
Subjects:
Anodes
Current density
Graphene
Lithium-ion batteries
Lithium-ion battery
Manganese dioxide nanocomposites
Nanocomposites
Oxides
Scanning electron microscopy
Three dimensional
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Summary:Graphene/α-MnO2 nanocomposites (GMC) with high performance as anode material were synthesized by a facile green procedure, in which we reduced graphene from graphene oxide and prepared the GMC simultaneously through a conventional hydrothermal route. The samples are systematically investigated by X-ray diffraction analysis, Raman spectroscopy, FT-IR spectroscopy, field-emission scanning electron microscopy, and transmission electron microscopy. The GMC presents a good reversible specific capacity of 998mAhg−1 at a current density of 60mAg−1 after 30 cycles and excellent rate capabilities of 590mAhg−1 at a current density of 12Ag−1. The present results indicate that GMC nanocomposites have enormous potential for application in lithium-ion batteries.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2013.07.002