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US 6,607,861 B2Granted
Application of γ-SVO and mixture of γ-SVO/ε-SVO in high rate electrochemical lithium cells containing SVO/CFx/SVO sandwich cathodes
AssigneeWilson Greatbatch Ltd.
InventorsHong Gan, Esther S. Takeuchi
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Abstract
Lithium electrochemical cells having a sandwich cathode electrode of SVO/CFx/SVO active materials are described. Such a design improves the service life of defibrillator electrochemical cells. A preferred formulation uses γ-SVO/CFx/γ-SVO or (γ+ε)-SVO/CFx/(γ+ε)-SVO sandwiched cathode electrodes.
Claims18
An electrochemical cell, which comprises:
- a) an anode of an alkali metal;
- b) a cathode of a configuration:
- first SVO/current collector/CFx/current collector/second SVO, wherein the first and second SVO materials are of the general formula AgxV2Oy with 0.80≦x<1.0 and 5.4≦y<5.5;
- and
- c) a nonaqueous electrolyte activating the anode and the cathode.
2 more elements
An electrochemical cell, which comprises:
- a) an anode of lithium;
- b) a cathode of a configuration:
- first SVO/titanium current collector/CFx/titanium current collector/second SVO, wherein the first and second SVO materials are of the general formula AgxV2Oy with 0.80≦x<1.0 and 5.4≦y<5.5;
- and
- c) a nonaqueous electrolyte.
2 more elements
Dependencies are inferred from the claim text.