H - Electricity – 01 – M
Patent
H - Electricity
01
M
319/34
H01M 6/16 (2006.01) A61N 1/378 (2006.01) H01M 2/06 (2006.01) H01M 2/26 (2006.01) H01M 4/12 (2006.01) H01M 4/40 (2006.01) H01M 4/48 (2006.01) H01M 4/58 (2006.01) H01M 6/10 (2006.01) H01M 2/02 (2006.01) H01M 2/12 (2006.01) H01M 10/04 (2006.01)
Patent
CA 1285611
ABSTRACT A solid cathode liquid organic electrolyte lithium cell for delivering high current pulses comprising a casing, a cathode structure in the casing comprising a plurality of plates in spaced apart relation, a lithium anode comprising a plurality of anode sections interposed between the cathode plates, a non-aqueous liquid organic electrolyte comprising the combination of a lithum salt and an organic solvent in the casing operatively contacting the anode and the cathode an electrical connection provided to the anode and an electrical connection provided to the cathode. In accordance with one aspect of the invention the cathode includes as active material AgxV2Oy where x is in the range from about 0.5 to about 2.0 and y is in the range from about 4.5 to about 6.0 which advantageously has high volumetric capacity and high rate capability with the result that the cell of the present invention delivers high capacity, shows good current pulsing behavior at various levels of discharge, and has a sloping discharge cause enabling end of life to be predicted. In accordance with another aspect of the present invention, the anode comprises a continuous elongated lithium element enclosed within a separator and folded into a plurality of sections interposed between the cathode plates, each of which individually is enclosed within separator material thereby enhancing the reliability of the cell. The cathode plates can be formed by an entirely dry pressing procedure thereby enhancing the shelf life of the resulting plates or, alternatively, the procedure can include dropwise addition of liquid electrolyte to the cathode mixture prior to pressing to enhance the performance and rate capability of the cell. The cell of the present invention finds advantageous use as a power source for an implantable cardiac defibrillator.
526555
Ebel Steven J.
Greenwood John M.
Keister Pamela P.
Mead Ralph T.
Muffoletto Barry C.
Macrae & Co.
Wilson Greatbatch Ltd.
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