Electrolyte for electrochemical cells having cathodes containing

Details Electrolyte for electrochemical cells having cathodes containing Electrolyte for electrochemical cells having cathodes containing

1997-10-03

2000-01-25

Nuzzolillo, Maria

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

429330, 429331, 429332, 429335, 429333, 429219, 4292312, 4292317, 42923195, H01M 618

Patent

active

060176563

ABSTRACT:
An electrochemical cell containing a cathode comprising silver vanadium oxide and an anode comprising lithium is disclosed that includes an improved electrolyte composition having the solvents propylene carbonate and 1,2-dimethoxyethane, and an additional third solvent that reduces the solubility of the composition of the silver vanadium cathode material. Preferably, the third solvent is a dialkyl carbonate such as dimethyl carbonate, diethyl carbonate or ethylmethyl carbonate. The improved electrolyte composition reduces the build up of resistance in the cell during cell discharge, and may affect the cell's performance in implantable cardiac defibrillator applications. The cell of the present invention may include a hybrid cathode containing a mixture of silver vanadium oxide and carbon monofluoride (CF.sub.x).

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