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US 5,352,546 AGranted
High rate electrochemical cell
AssigneeAlliant Techsystems Inc.
InventorsDavid L. Chua, Hsiu-Ping Lin, Rebecca A. Smith
Life of this patent
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Abstract
An active metal non-aqueous electrochemical cell includes an anode selected from lithium metal and intercalated lithium compounds, an electrolyte system consisting essentially of an SO.sub.2 solvent containing an amount of electrolyte salt, and a solid liquid or gaseous cathode active material selected from a class of materials which are reduced in preference to SO.sub.2, wherein the amount of cathode material is generally limiting with respect to the desired discharge reaction.
Claims9
A non-aqueous electrochemical cell comprising:
- (a) an anode selected from lithium metal and intercalated lithium compounds;
- (b) an electrolyte system including SO.sub.2 solvent containing electrolyte salt;
- (c) a liquid or gaseous cathode material that is reduced in preference to SO.sub.2, selected from the group consisting of oxyhalides including SO.sub.2 Cl.sub.2 and SOCl.sub.2, wherein the amount of cathode material is such that it is essentially consumed during a designed normal cell discharge reaction cycle in a manner that renders the cell cathode-limited.
A non-aqueous electrochemical cell comprising:
- (a) an anode including lithium or a reversible lithium intercalation material;
- (b) an electrolyte system including SO.sub.2 solvent and an electrolyte salt selected from the group consisting of lithium salts and combinations thereof;
- (c) a solid cathode reactant material that is reduced in preference to SO.sub.2 and selected from the group consisting of Li.sub.x CoO.sub.2 (0.4.ltoreq..times..ltoreq.1.0), LINiO.sub.2, V.sub.2 O.sub.5, a transition metal oxide, or any lithiated manganese dioxide material, wherein the amount of cathode material is such that it is essentially consumed during a designed normal cell discharge reaction cycle in a manner that renders the cell cathode-limited.
Dependencies are inferred from the claim text.