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
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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