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Hierarchical TiO2 nanobelts@MnO2 ultrathin nanoflakes core-shell array electrode materials for supercapacitors
Luo Y.1; Kong D.1; Luo J.1; Chen S.1; Zhang D.2; Qiu K.2; Qi X.1; Zhang H.1; Li C.M.3; Yu T.1
2013-08-05
Source PublicationRSC Advances
ISSN20462069
Volume3Issue:34Pages:14413-14422
AbstractHierarchical TiO2 nanobelts@MnO2 ultrathin nanoflakes core-shell arrays (TiO2@MnO2 NBAs) have been fabricated on a Ti foil substrate by hydrothermal approach and further investigated as the electrode for a supercapacitor. Their electrochemical properties were examined using cyclic voltammetry (CV), galvanostatic charge-discharge, and electrochemical impedance spectroscopy (EIS) in a three-electrode cell. The experimental observations clearly show that the fabricated TiO 2@MnO2 NBAs electrode possesses superior rate capability and outstanding cycling performance due to its rationally designed nanostructure. A specific capacitance as high as 557.6 F g-1 is obtained at a scan rate of 200 mV s-1 (454.2 F g-1 at a current density of 200 mA g-1) in 1 M Na2SO4 aqueous solution. The energy density and power density measured at 2 A g -1 are 7.5 Wh kg-1 and 1 kW kg-1 respectively, demonstrating its good rate capability. In addition, the composite TiO 2@MnO2 NBAs electrode shows excellent long-term cyclic stability. The fabrication method presented here is facile, cost-effective and scalable, which may open a new pathway for real device applications. © The Royal Society of Chemistry 2013.
DOI10.1039/c3ra42229a
URLView the original
Language英語
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Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Nanyang Technological University
2.Xinyang Normal University
3.Southwest China Normal University
4.National University of Singapore
Recommended Citation
GB/T 7714
Luo Y.,Kong D.,Luo J.,et al. Hierarchical TiO2 nanobelts@MnO2 ultrathin nanoflakes core-shell array electrode materials for supercapacitors[J]. RSC Advances,2013,3(34):14413-14422.
APA Luo Y..,Kong D..,Luo J..,Chen S..,Zhang D..,...&Yu T..(2013).Hierarchical TiO2 nanobelts@MnO2 ultrathin nanoflakes core-shell array electrode materials for supercapacitors.RSC Advances,3(34),14413-14422.
MLA Luo Y.,et al."Hierarchical TiO2 nanobelts@MnO2 ultrathin nanoflakes core-shell array electrode materials for supercapacitors".RSC Advances 3.34(2013):14413-14422.
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