Cathode material for nonaqueous electrochemical cells

Details Cathode material for nonaqueous electrochemical cells Cathode material for nonaqueous electrochemical cells

1994-06-21

1996-08-13

Gorgos, Kathryn

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

429194, 429217, 429232, H01M 454

Patent

active

055454976

ABSTRACT:
A new cathode material for use in a high energy density electrochemical cell, preferably comprising silver and vanadium, is described. The new cathode material has the general formula Ag.sub.x V.sub.2 O.sub.y and can comprise a .beta.-phase silver vanadium oxide having in the general formula x=0.35 and y=5.18 and a .gamma.-phase silver vanadium oxide having in the general formula x=0.74 and y=5.37 or a mixture of the phases. This new cathode material exhibits reduced voltage delay during high rate applications, such as when the cathode mixture is incorporated into a primary lithium electrochemical cell powering an implantable cardiac defibrillator.

REFERENCES:
patent: 4310609 (1982-01-01), Liang et al.
patent: 4830940 (1989-05-01), Keister et al.
patent: 5180642 (1993-01-01), Weiss et al.
patent: 5389472 (1995-02-01), Takeuchi et al.

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