Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Tape or flexible-type cell including tape fuel cells or...
Patent
1997-06-20
1999-08-17
Maples, John S.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Tape or flexible-type cell including tape fuel cells or...
429314, 429331, 429217, 429224, 429232, H01M 618, H01M 450
Patent
active
059392231
ABSTRACT:
A primary lithium battery particularly adapted for use in self-contained self-powered devices (SSPD) for mobile communication and computing products, such as radio frequency identification tags, PCMCIA cards, and smart cards. The battery has a flexible and compact design, and utilizes a solid polymer electrolyte membrane that preferably has a polyacrylonitrile matrix. Performance of the electrolyte membrane is optimized by controlling the amount of aprotic organic solvents within the membrane within a prescribed range of ratios. In so doing, the performance characteristics of the battery closely approximate that of conventional liquid electrolytes without the safety hazards associated with the risk of liquid electrolyte leakage, and exhibit enhanced performance at sub-ambient temperatures. A further feature is that the battery's cathode is encapsulated within a polymeric matrix that eliminates the exposure hazard posed by lithium intercalation compounds used within the cathode.
REFERENCES:
patent: 5474862 (1995-12-01), Okuno et al.
patent: 5552239 (1996-09-01), Gozdz et al.
patent: 5558957 (1996-09-01), Datta et al.
patent: 5571637 (1996-11-01), Idota
Cotte John M.
Datta Madhav
Shenoy Ravindra
August Casey P.
Hartman Domenica N.S.
Hartman Gary M.
International Business Machines - Corporation
Maples John S.
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