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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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Official URL: http://dx.doi.org/10.1016/j.jelechem.2015.11.003


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
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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