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


Autoria(s): Jena, Anirudha; Penki, Tirupathi Rao; Munichandraiah, N; Shivashankar, SA
Data(s)

2016

Resumo

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.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/53314/1/Jou_Ele_Che_761_21_2016.pdf

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.

Publicador

ELSEVIER SCIENCE SA

Relação

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

http://eprints.iisc.ernet.in/53314/

Palavras-Chave #Inorganic & Physical Chemistry #Materials Research Centre #Centre for Nano Science and Engineering
Tipo

Journal Article

PeerReviewed