Influences of graphene oxide support on the electrochemical performances of graphene oxide-MnO2 nanocomposites
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 ph...
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sg-ntu-dr.10356-949672023-02-28T19:38:41Z Influences of graphene oxide support on the electrochemical performances of graphene oxide-MnO2 nanocomposites Yang, Huanping Jiang, Jian Zhou, Weiwei Lai, Linfei Xi, Lifei Lam, Yeng Ming Shen, Zexiang Khezri, Bahareh Yu, Ting School of Materials Science & Engineering DRNTU::Engineering::Materials::Nanostructured materials 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. Published version 2012-05-29T07:06:46Z 2019-12-06T19:05:34Z 2012-05-29T07:06:46Z 2019-12-06T19:05:34Z 2011 2011 Journal Article 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. https://hdl.handle.net/10356/94967 http://hdl.handle.net/10220/8169 10.1186/1556-276X-6-531 21951643 166351 en Nanoscale research letters © 2011 Yang et al; licensee Springer. 8 p. application/pdf |
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DRNTU::Engineering::Materials::Nanostructured materials Yang, Huanping Jiang, Jian Zhou, Weiwei Lai, Linfei Xi, Lifei Lam, Yeng Ming Shen, Zexiang Khezri, Bahareh Yu, Ting Influences of graphene oxide support on the electrochemical performances of graphene oxide-MnO2 nanocomposites |
description |
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. |
author2 |
School of Materials Science & Engineering |
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School of Materials Science & Engineering Yang, Huanping Jiang, Jian Zhou, Weiwei Lai, Linfei Xi, Lifei Lam, Yeng Ming Shen, Zexiang Khezri, Bahareh Yu, Ting |
format |
Article |
author |
Yang, Huanping Jiang, Jian Zhou, Weiwei Lai, Linfei Xi, Lifei Lam, Yeng Ming Shen, Zexiang Khezri, Bahareh Yu, Ting |
author_sort |
Yang, Huanping |
title |
Influences of graphene oxide support on the electrochemical performances of graphene oxide-MnO2 nanocomposites |
title_short |
Influences of graphene oxide support on the electrochemical performances of graphene oxide-MnO2 nanocomposites |
title_full |
Influences of graphene oxide support on the electrochemical performances of graphene oxide-MnO2 nanocomposites |
title_fullStr |
Influences of graphene oxide support on the electrochemical performances of graphene oxide-MnO2 nanocomposites |
title_full_unstemmed |
Influences of graphene oxide support on the electrochemical performances of graphene oxide-MnO2 nanocomposites |
title_sort |
influences of graphene oxide support on the electrochemical performances of graphene oxide-mno2 nanocomposites |
publishDate |
2012 |
url |
https://hdl.handle.net/10356/94967 http://hdl.handle.net/10220/8169 |
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