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Influences of graphene oxide support on the electrochemical performances of graphene oxide-MnO2 nanocomposites

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Influences of graphene oxide support on the electrochemical performances of graphene oxide-MnO2 nanocomposites

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dc.contributor.author Yang, Huanping
dc.contributor.author Jiang, Jian
dc.contributor.author Zhou, Weiwei
dc.contributor.author Lai, Linfei
dc.contributor.author Xi, Lifei
dc.contributor.author Lam, Yeng Ming
dc.contributor.author Shen, Zexiang
dc.contributor.author Khezri, Bahareh
dc.contributor.author Yu, Ting
dc.date.accessioned 2012-05-29T07:06:46Z
dc.date.available 2012-05-29T07:06:46Z
dc.date.copyright 2011
dc.date.issued 2012-05-29
dc.identifier.citation Yang, H., Jiang, J., Zhou, W., Lai, L., Xi, L., Lam, Y. M., et al. (2011). Influences of graphene oxide support on the electrochemical performances of graphene oxide-MnO2 nanocomposites. Nanoscale research letters, 6, 531.
dc.identifier.uri http://hdl.handle.net/10220/8169
dc.description.abstract MnO2 supported on graphene oxide (GO) made from different graphite materials has been synthesized and further investigated as electrode materials for supercapacitors. The structure and morphology of MnO2-GO nanocomposites are characterized by X-ray diffraction, X-ray photoemission spectroscopy, scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, and Nitrogen adsorption-desorption. As demonstrated, the GO fabricated from commercial expanded graphite (denoted as GO(1)) possesses more functional groups and larger interplane gap compared to the GO from commercial graphite powder (denoted as GO(2)). The surface area and functionalities of GO have significant effects on the morphology and electrochemical activity of MnO2, which lead to the fact that the loading amount of MnO2 on GO(1) is much higher than that on GO(2). Elemental analysis performed via inductively coupled plasma optical emission spectroscopy confirmed higher amounts of MnO2 loading on GO(1). As the electrode of supercapacitor, MnO2-GO(1) nanocomposites show larger capacitance (307.7 F g-1) and better electrochemical activity than MnO2-GO(2) possibly due to the high loading, good uniformity, and homogeneous distribution of MnO2 on GO(1) support.
dc.format.extent 8 p.
dc.language.iso en
dc.relation.ispartofseries Nanoscale research letters
dc.rights © 2011 Yang et al; licensee Springer.
dc.subject DRNTU::Engineering::Materials::Nanostructured materials.
dc.title Influences of graphene oxide support on the electrochemical performances of graphene oxide-MnO2 nanocomposites
dc.type Journal Article
dc.contributor.school School of Materials Science and Engineering
dc.identifier.doi http://dx.doi.org/10.1186/1556-276X-6-531
dc.description.version Published version

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