High specific surface area alpha-Fe2O3 nanostructures as high performance electrode material for supercapacitors

Shivakumara, S and Penki, Tirupathi Rao and Munichandraiah, N (2014) High specific surface area alpha-Fe2O3 nanostructures as high performance electrode material for supercapacitors. In: MATERIALS LETTERS, 131 . pp. 100-103.

PDF mat_let_131_100_2014.pdf - Published Version Restricted to Registered users only Download (1MB) | Request a copy

Abstract

Porous alpha-Fe2O3 nanostructures have been synthesized by a simple sol-gel route. The alpha-Fe2O3 nanostructures are poorly crystalline and porous with BET surface area of 386 m(2) g(-1). The high discharge capacitance of alpha-Fe2O3 electrodes is 300 F g(-1) when the electrodes are cycled in 0.5 M Na2SO3 at a current density of 1 A g(-1). The capacitance retention after 1000 cycles is about 73% of the initial capacitance at a current density of 2 A g(-1). The high discharge capacitance of alpha-Fe2O3 in comparison with the literature reports are attributed to high surface area and porosity of the iron oxide prepared in the present study. As the iron oxides are inexpensive, the capacity of alpha-Fe2O3 is expected to be of potential use for supercapacitor application. (C) 2014 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	MATERIALS LETTERS
Publisher:	ELSEVIER SCIENCE BV
Additional Information:	Copy right for this article belongs to the ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Keywords:	alpha-Fe2O3 nanostructures; Sol-gel preparation; Porous materials; Supercapacitors
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	03 Sep 2014 10:51
Last Modified:	03 Sep 2014 10:51
URI:	http://eprints.iisc.ac.in/id/eprint/49743

Actions (login required)

View Item