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Vertically aligned and tree-like carbon nanostructures as anode of lithium ion battery

Ghosh, Monalisa and Venkatesh, G and Rao, G Mohan (2018) Vertically aligned and tree-like carbon nanostructures as anode of lithium ion battery. In: DIAMOND AND RELATED MATERIALS, 87 . pp. 56-60.

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Official URL: http://dx.doi.org/10.1016/j.diamond.2018.05.011

Abstract

A novel nanostructured carbon thin film, is synthesized by electron cyclotron plasma enhanced chemical vapor deposition and is proposed as the anode material for lithium ion battery. The individual nanostructures of the thin film have a multiwalled carbon nanotube, with carbon films attached to it, giving it a tree like appearance. All the nanostructures are aligned perpendicular to the surface of the substrate. The unique morphological structure and the vertical alignment provides for a large as well as unhindered area of interaction between the electrode material and the electrolyte. The cyclic voltammetry studies of the material with respect to lithium, shows that the lithium ions can be repeatedly intercalated and deintercalated to and from the material. On performing galvanostatic charge discharge cycling, the material has shown a lithiation capacity of 323 mu Ah.cm(-2)mu m(-1)(2590 mAh.g(-1)) and a delithiation capacity of 65 mu Ah.cm(-2)mu m(-1) (522 mAh.g(-1)) for the first cycle. The specific capacity after five cycles, during lithiation is 74 mu Ah.cm(-2) mu m(-1) (607 mAh.g(-1)) delithiation is 56 mu Ah.cm(-2)mu m(-1) (459 mAh.g(-1)). The reversible specific capacity for the material remains almost constant after this initial capacity loss up to 50 cycles.

Item Type: Journal Article
Additional Information: Copy right for this article belong to ELSEVIER SCIENCE SA
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Depositing User: Id for Latest eprints
Date Deposited: 11 Oct 2018 13:38
Last Modified: 11 Oct 2018 13:38
URI: http://eprints.iisc.ac.in/id/eprint/60862

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