In situ engineering of urchin-like reduced graphene oxide–Mn2O3–Mn3O4 nanostructures for supercapacitors

Show simple item record Chidembo, Alfred Tawirirana Aboutalebi, Seyed Hamed Konstantinov, Konstantin Jafta, Charl Jeremy Liu, Hua Kun Ozoemena, Kenneth I. 2014-02-04T13:35:25Z 2014-02-04T13:35:25Z 2014
dc.description.abstract We report the use of a spray pyrolysismethod to synthesize high surface area (BET surface area of 139m2 g 1) self-organized, micron sized urchin-like composites made up of reduced graphene oxide and needle-shaped manganese oxide (rGO–Mn2O3–Mn3O4). Maximum capacitances of 425 Fg 1 at 5 mV s 1 from a three electrode set up and 133 Fg 1 at a current density of 0.2 Ag 1 were recorded using an asymmetric two electrode set up with graphene as the anode. The composite material also showed a capacitance retention of 83% over 1000 cycles. We attribute this remarkable performance to the high specific surface area due to the urchin-like hollow structures and synergy between the manganese oxide and reduced graphene oxide materials within the composite. Furthermore, this synthesis technique can be exploited further in the bulk synthesis of cost effective graphene–metal oxide hybrid materials for energy storage applications. en
dc.description.librarian hb2014 en
dc.description.librarian ai2014
dc.description.sponsorship Australian Research Council for the fnancial support provided through DP (1093952). en
dc.description.uri en
dc.identifier.citation Chidembo, AT, Aboutalebi, SH, Konstantinov, K, Jafta, CJ, Liu, HK & Ozoemena, KI 2014, 'In situ engineering of urchin-like reduced graphene oxide-Mn2O3-Mn3O4 nanostructures for supercapacitors', RSC Advances, vol. 4, no. 2, pp. 886-892. en
dc.identifier.issn 2046-2069 (online)
dc.identifier.other 10.1039/c3ra44973d
dc.language.iso en en
dc.publisher Royal Society of Chemistry en
dc.rights © The Royal Society of Chemistry 2014 en
dc.subject In situ engineering en
dc.subject.lcsh Graphene en
dc.subject.lcsh Nanostructures en
dc.subject.lcsh Supercapacitors en
dc.subject.lcsh Manganese oxides en
dc.subject.lcsh Oxides en
dc.title In situ engineering of urchin-like reduced graphene oxide–Mn2O3–Mn3O4 nanostructures for supercapacitors en
dc.type Postprint Article en

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