Flower-like porous cobalt(II) monoxide nanostructures as anode material for Li-ion batteries

Jena, Anirudha and Penki, Tirupathi Rao and Munichandraiah, N and Shivashankar, SA (2016) Flower-like porous cobalt(II) monoxide nanostructures as anode material for Li-ion batteries. In: JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 761 . pp. 21-27.

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Abstract

In the present study, a microwave-assisted, solution-based route has been employed to obtain porous CoO nano structures. Detailed characterization reveals that the flower-like nanostructures comprise petal-like sheets, each of which is made of an ordered, porous arrangement of crystallites of CoO measuring about 6 nm. TEM analysis shows that each ``petal'' is an oriented aggregate of CoO nanocrystals, such aggregation promoted by the hydroxyl moieties derived from the solution. The structure provides a large specific area as well as the porosity desirable in electrodes in Li-ion batteries. Electrochemical measurements carried out on electrodes made of nanostructured CoO show excellent Li ion-storing capability. A specific capacitance of 779 mAh g(-1) has been measured at a specific current of 100 mA g(-1). Measurements show also excellent cyclability and coulombic efficiency. Impedance spectroscopy provides evidence for charge transfer occurring in the porous networks. (C) 2015 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Publisher:	ELSEVIER SCIENCE SA
Additional Information:	Copy right for this article belongs to the ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Keywords:	Microwave; Metalorganic complex; Cobalt monoxide; Lithium ion battery
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry Division of Chemical Sciences > Materials Research Centre Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	04 Mar 2016 05:08
Last Modified:	04 Mar 2016 05:08
URI:	http://eprints.iisc.ac.in/id/eprint/53314

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