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26 pp.
 
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TitleThin-film Rechargeable Lithium Batteries
Author(s)Bates, J. B.; Gruzalski, G. R.; Dudney, N. J.; Luck, C. F.; Yu, X.
Publication DateNovember 1993
Report NumberCONF 9311115--4
Unique IdentifierACC0178
Other NumbersLegacy ID: DE94018956; OSTI ID: 10183959
Research OrgOak Ridge National Laboratory, TN (United States)
Contract NoAC05-84OR21400
Sponsoring OrgUSDOE, Washington, DC (United States)
Other InformationConference: Symposium on Science of Advanced Batteries, Cleveland, OH (United States), 8-9 Nov 1993
Subject25 Energy Storage; Metal nonmetal Batteries; Design; Performance; Battery Charging; Thickness; Titanium Sulfides; Vanadium Oxides; Spinels; Lithium Compounds; Phosphorus Compounds; Electric Conductivity; Service Life
Related Web PagesThin-film Lithium Batteries
AbstractRechargeable thin films batteries with lithium metal anodes, an amorphous inorganic electrolyte, and cathodes of lithium intercalation compounds have been fabricated and characterized. The cathodes include TiS{sub 2}, the {omega} phase of V{sub 2}O{sub 5}, and the cubic spinel Li{sub x}Mn{sub 2}O{sub 4} with open circuit voltages at full charge of about 2.5 V, 3.7 V, and 4.2 V, respectively. The development of these robust cells, which can be cycled thousands of times, was possible because of the stability of the amorphous lithium electrolyte, lithium phosphorus oxynitride. This material has a typical composition of Li{sub 2.9}PO{sub 3.3}N{sub 0.46} and a conductivity at 25 C of 2 {mu}S/cm. Thin film cells have been cycled at 100% depth of discharge using current densities of 2 to 100 {mu}A/cm{sup 2}. The polarization resistance of the cells is due to the slow insertion rate of Li{sup +} ions into the cathode. Chemical diffusion coefficients for Li{sup +} ions in the three types of cathodes have been estimated from the analysis of ac impedance measurements.
1136 K
26 pp.
 
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