Hierarchical TiO<inf>2</inf> nanobelts@MnO<inf>2</inf> ultrathin nanoflakes core-shell array electrode materials for supercapacitors

doi:10.1039/c3ra42229a

	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 Publication	RSC Advances
ISSN	20462069
Volume	3 Issue:34 Pages:14413-14422
Abstract	Hierarchical 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.
DOI	10.1039/c3ra42229a
URL	View the original
Language	英語
Fulltext Access	View Full-Text via DOI View Full-Text via Web of Science View Full-Text via Scopus
Citation statistics	Cited Times [WOS]:82 [WOS Record] [Related Records in WOS]
Document Type	Journal article
Collection	University of Macau
Affiliation	1.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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