Sputter Deposited High Capacity Li2-xMnO3-y Films for Thin Film Battery Application
| Autor: | K. Yellareswara Rao, N. Munichandraiah, C.S. Nimisha, D. Shanmughasundaram, G. Mohan Rao, Tirupathi Rao Penki |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Diffraction
Range (particle radiation) Materials science Renewable Energy Sustainability and the Environment Analytical chemistry Condensed Matter Physics Electrochemistry Surfaces Coatings and Films Electronic Optical and Magnetic Materials X-ray photoelectron spectroscopy Sputtering Phase (matter) Materials Chemistry Atomic ratio Instrumentation Appiled Physics Thin film Inorganic & Physical Chemistry |
| Zdroj: | IndraStra Global. |
| ISSN: | 2381-3652 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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