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Thin Film Amorphous Electrolytes: The Li2O-SiO2-P2O5 System

Published online by Cambridge University Press:  28 February 2011

J. B. Bates ,
N. J. Dudney ,
B. C. Sales ,
J. D. Robertson ,
R. A. Zuhr ,
G. R. Gruzalski  and
C. F. Luck
J. B. Bates
Affiliation:
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830–6024
N. J. Dudney
Affiliation:
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830–6024
B. C. Sales
Affiliation:
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830–6024
J. D. Robertson
Affiliation:
Department of Chemistry, University of Kentucky, Lexington, KY, 40506–0055
R. A. Zuhr
Affiliation:
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830–6024
G. R. Gruzalski
Affiliation:
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830–6024
C. F. Luck
Affiliation:
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830–6024
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Abstract

Thin film amorphous electrolytes with compositions xLi2O:ySiO2:zP2O5 were deposited by single and dual source rf magnetron sputtering and their compositions determined by electron and ion beam techniques. Films containing P but no Si were composed of mainly orthophosphate and some linear chain phosphate anions, whereas single phase films containing Si and P were evidently composed of branched and possibly cyclic and extended network structures. Films with Si/P > 1 appeared to contain two or more amorphous phases. In the range of compositions investigated, the lithium ion conductivity depends mainly on the lithium ion mobility which is sensitive to the structure of the films. An open circuit voltage from 1 to 3 V measured between blocking metal contacts on the electrolyte thin films suggests that the films mightbe electrets.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 210: Symposium L – Solid State Ionics II , 1990 , 569
Copyright
Copyright © Materials Research Society 1991

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References

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