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

K. Yellareswara Rao, D. Shanmughasundaram, C. S. Nimisha, Tirupathi Rao Penki, N. Munichandraiah, G. Mohan Rao

Research output: Contribution to journalArticle

4 Citations (Scopus)

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 μAh μm−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 μA cm−2 to 100 μA cm−2.
LanguageEnglish
PagesA28-A32
JournalJournal of the Electrochemical Society
Volume161
Issue number1
DOIs
Publication statusPublished - 30 Oct 2014

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Powders
Thin films
Manganese oxide
Magnetron sputtering
Lithium
Current density
X ray photoelectron spectroscopy
X ray diffraction
Electrodes
lithium manganese oxide

Cite this

Rao, K. Yellareswara ; Shanmughasundaram, D. ; Nimisha, C. S. ; Penki, Tirupathi Rao ; Munichandraiah, N. ; Rao, G. Mohan. / Sputter Deposited High Capacity Li2-xMnO3-y Films for Thin Film Battery Application. In: Journal of the Electrochemical Society. 2014 ; Vol. 161, No. 1. pp. 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 μAh μm−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 μA cm−2 to 100 μA cm−2.",
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Sputter Deposited High Capacity Li2-xMnO3-y Films for Thin Film Battery Application. / Rao, K. Yellareswara; Shanmughasundaram, D.; Nimisha, C. S.; Penki, Tirupathi Rao; Munichandraiah, N.; Rao, G. Mohan.

In: Journal of the Electrochemical Society, Vol. 161, No. 1, 30.10.2014, p. A28-A32.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Sputter Deposited High Capacity Li2-xMnO3-y Films for Thin Film Battery Application

AU - Rao, K. Yellareswara

AU - Shanmughasundaram, D.

AU - Nimisha, C. S.

AU - Penki, Tirupathi Rao

AU - Munichandraiah, N.

AU - Rao, G. Mohan

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AB - 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 μAh μm−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 μA cm−2 to 100 μA cm−2.

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