Control over the morphology and phase of MnOx formed in the modified Hummers’ method and impact on the electrocapacitive properties of MnOx-graphite oxide composite electrodes

Sun, Xiaoming, Liu, Peng, Gu, Yi, Rufford, Thomas E. and Zhao, X. S. (2016) Control over the morphology and phase of MnOx formed in the modified Hummers’ method and impact on the electrocapacitive properties of MnOx-graphite oxide composite electrodes. RSC Advances, 6 50: 44717-44722. doi:10.1039/C6RA05577J


Author Sun, Xiaoming
Liu, Peng
Gu, Yi
Rufford, Thomas E.
Zhao, X. S.
Title Control over the morphology and phase of MnOx formed in the modified Hummers’ method and impact on the electrocapacitive properties of MnOx-graphite oxide composite electrodes
Formatted title
Control over the morphology and phase of MnOx formed in the modified Hummers’ method and impact on the electrocapacitive properties of MnOx-graphite oxide composite electrodes
Journal name RSC Advances   Check publisher's open access policy
ISSN 2046-2069
Publication date 2016-04-28
Year available 2016
Sub-type Article (original research)
DOI 10.1039/C6RA05577J
Open Access Status Not Open Access
Volume 6
Issue 50
Start page 44717
End page 44722
Total pages 6
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Language eng
Formatted abstract
We report an one-pot method to prepare manganese oxide decorated graphite oxide as composite electrode materials for supercapacitors. Dispersed manganese oxide particles were precipitated on the graphite oxide surfaces from KMnO4 added during the synthesis of graphite oxide by using a modified Hummers' method. The morphology and crystalline phase of the manganese oxide can be controlled by adjusting the mass ratio of KMnO4/graphite. The sample prepared with a KMnO4/graphite mass ratio of 2 contained nanoflowers of MnO2 phase and exhibited a specific capacitance of 120 F g−1 in 6 M KOH at a current density of 0.2 A g−1. This composite retained 85% of its original capacitance after 2000 cycles, indicating an excellent stability against cycling.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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Created: Thu, 26 May 2016, 20:21:57 EST by Dr Thomas Rufford on behalf of School of Chemical Engineering