Sputter Deposited High Capacity Li2-xMnO3-y Films for Thin Film Battery Application

Rao, Yellareswara K and Shanmughasundaram, D and Nimisha, CS and Penki, Tirupathi Rao and Munichandraiah, N and Rao, Mohan G (2014) Sputter Deposited High Capacity Li2-xMnO3-y Films for Thin Film Battery Application. In: JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 161 (1). A28-A32.

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Abstract

Lithium manganese oxide (Li2-xMnO3-y) thin films have been deposited from activated Li2MnO3 powder by radio frequency magnetron sputtering for the first time in the literature and subjected to electrochemical characterization. Physicochemical characterization by X-ray diffraction has revealed the formation of the thin films with crystallographic phase identical to that of the powder target made of Li2-xMnO3-y. The Li:Mn atomic ratio for the powder and film are calculated by X-ray photoelectron spectroscopy and it is found to be 1.6:1.0. From galvanostatic charge discharge studies, a specific discharge capacity of 139 mu Ah mu m(-1) cm(-2) was obtained when cycled between 2.00 and 3.50 V vs Li/Li+. Additionally the rate capability of the thin film electrodes was studied by subjecting the cells to charge-discharge cycling at different current densities in the range from 10 mu A cm(-2) to 100 mu A cm(-2). (C) 2013 The Electrochemical Society. All rights reserved.

Item Type:	Journal Article
Publication:	JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Publisher:	ELECTROCHEMICAL SOC INC
Additional Information:	Copyright for this article belongs to the ELECTROCHEMICAL SOC INC, USA
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	13 Mar 2014 07:30
Last Modified:	13 Mar 2014 07:30
URI:	http://eprints.iisc.ac.in/id/eprint/48562

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