Synthesis and characterization of porous flowerlike alpha-Fe2O3 nanostructures for supercapacitor application

Shivakumara, S and Penki, Tirupathi Rao and Munichandraiah, N (2013) Synthesis and characterization of porous flowerlike alpha-Fe2O3 nanostructures for supercapacitor application. In: ECS Electrochemistry Letters, 2 (7). A60-A62.

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Abstract

Porous flower-like alpha-Fe2O3 nanostructures synthesized by an ethylene glycol mediated self-assembly process are crystalline and porous with BET surface area of 64.6 m(2) g(-1). The discharge capacitance is 127 F g(-1) when the electrodes are cycled in 0.5 M Na2SO3 at a current density of 1 A g(-1). Capacitance retention after 1000 cycles is about 80% of the initial capacitance. The high discharge capacitance and its retention are attributed to high surface area and porosity of the iron oxide. As the iron oxides are inexpensive, the nano alpha-Fe2O3 is expected to be of potential use for supercapacitor application.

Item Type:	Journal Article
Publication:	ECS Electrochemistry Letters
Publisher:	Electrochemical Society Inc
Additional Information:	Copyright of this article belongs to Electrochemical Society Inc.
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	18 Jun 2013 11:48
Last Modified:	18 Jun 2013 11:48
URI:	http://eprints.iisc.ac.in/id/eprint/46734

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