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Vanadium oxide nanorings: Facile synthesis, formation mechanism and electrochemical properties

Nagaraju, G and Ashoka, S and Manjunatha, R and Srinivasan, S and Livage, J. and Chandrappa, GT (2016) Vanadium oxide nanorings: Facile synthesis, formation mechanism and electrochemical properties. In: MATERIALS RESEARCH BULLETIN, 83 . pp. 542-549.

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Official URL: http://dx.doi.org/10.1016/j.materresbull.2016.05.0...


This paper describes the hydrothermal synthesis of vanadium oxide nanorings and nanobelts from aqueous precursors without using any template. These nanorings are formed via the acidification of sodium metavanadate solution. A simple ion intercalation/de-intercalation process occurs under mild hydrothermal conditions leading to the self-rolling of exfoliated vanadium oxide nanobelts. The structure and morphology of the products are characterized by XRD, SEM, TEM and charge-discharge measurement. XRD pattern reveals that the products consist of V2O5 nanorings and Na0.3V2O5 nanobelts evidenced by SEAD pattern and EDS. Highly magnified TEM images exhibit nanorings made of nanoribbons of width about 300 nm and thickness of about 60 nm. Electrochemical analyses revealed that the V2O5 nanorings/nanobelts delivers an initial lithium-ion intercalation capacity of 280 mAh(-1) and reaches a stabilized capacity of 200 mAh g(-1) at a current density of 100 mAg(-1). (C) 2016 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 22 Oct 2016 09:14
Last Modified: 22 Oct 2016 09:14
URI: http://eprints.iisc.ac.in/id/eprint/54993

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