Alkali metal electrochemical cell having an improved cathode activated with a nonaqueous electrolyte having a carbonate additive
Patent 6221534 Issued on April 24, 2001. Estimated Expiration Date: 
November 25, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 25, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2583589 3489611 3567515 3825445 Electrochemical cells with non-aqueous electrolytes containing macroheterocyclic compounds Cells having cathodes containing Cs S cathode-active materials Non-aqueous primary cell Additive for electrochemical cell stability Activating carbonaceous electrodes Metal oxide composite cathode material for high energy density batteries InventorsAssigneeApplicationNo. 200304 filed on 11/25/1998US Classes:429/347, Organic solute component in aqueous electrolyte429/219, Silver component is active material429/220, Copper component is active material429/231.2, Alkalated vanadium (V) chalcogenide429/231.5Vanadium (V), chromium (Cr), niobium (Nb), molybdenum (Mo), titanium (Ti), or tungsten (W) component is active materialExaminersPrimary: Weiner, LauraAttorney, Agent or FirmForeign Patent References
International ClassH01M 006/04AbstractThe present invention is directed to an unexpected benefit in a lithium cell derived from using a combination of silver vanadium oxide prepared in a temperature range of about 450° C. to about 500° C. activated with a nonaqueous electrolyte having a passivation inhibitor additive selected from a nitrite, a nitrate, a carbonate, a dicarbonate, a phosphonate, a phosphate, a sulfate and hydrogen fluoride, and mixtures thereof. The benefits include additional battery life resulting from a reduction in voltage delay and RDC build-up. A preferred electrolyte is 1M LiAsF6 in a 50:50 mixture, by volume, of PC and DME having dibenzyl carbonate added therein.Other References
Field of SearchChemically specified organic solvent containingOne of the organic solvents contains a hetero ring The hetero ring is a cyclic carbonate Organic component is an expander or addition agent for improving electrode capacity or plating characteristics Chemically specified inorganic electrochemically active material containing Vanadium (V), chromium (Cr), niobium (Nb), molybdenum (Mo), titanium (Ti), or tungsten (W) component is active material The alkali metal is lithium Silver component is active material Copper component is active material Iron component is active material Nickel component is active material Manganese component is active material Alkalated transition metal chalcogenide component is active material Alkalated vanadium (V) chalcogenide Organic solute component in aqueous electrolyte |
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