Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Patent
1997-03-27
1999-12-14
Maples, John S.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
2521821, H01M 434
Patent
active
06001508&
ABSTRACT:
Solid divalent silver oxide is reacted in hot aqueous alkaline reaction medium with a solid bismuth component and a reducing agent. The reaction product comprises a novel compound containing silver, bismuth, and oxygen, which is used in making cathode pellets for use in alkaline electrochemical cells. The cells exhibit low internal impedance and substantially single voltage discharge characteristic of monovalent silver oxide while retaining a significant portion of the coulombic capacity a of divalent silver cathode, without toxicity problems attendant cathodes containing lead and/or cadmium. Particulate cathode materials are disclosed comprising an intermediate layer of AgO.sub.2 disposed between a core of AgO and an outer layer comprising silver and bismuth moieties.
REFERENCES:
patent: 3118275 (1964-01-01), McLain et al.
patent: 3297503 (1967-01-01), Hoffmann et al.
patent: 3671343 (1972-06-01), Gawlick et al.
patent: 3677840 (1972-07-01), Shaw et al.
patent: 3695951 (1972-10-01), Helms et al.
patent: 4001146 (1977-01-01), Horowitz
patent: 4141727 (1979-02-01), Shida et al.
patent: 4383029 (1983-05-01), Yamada et al.
patent: 4678127 (1987-07-01), Megahed et al.
patent: 4743302 (1988-05-01), Dumesnil et al.
patent: 4835077 (1989-05-01), Megahed et al.
patent: 5118662 (1992-06-01), Agostinelli et al.
patent: 5389469 (1995-02-01), Passaniti et al.
Chemical Abstract 105:15676k, 1986 (No month).
Chemical Abstract 115:84023p, 1991 (no month).
Abstract of Japan Patent 73-014838, Aug. 1993.
Goodenough et al, "Exploring the A.sup.+ B.sup.5+ O.sub.3 Compounds," J. Solid State Chem., vol. 6 No. 4, Apr., 1973.
Megahed El-Sayed A.
Passaniti Joseph Lynn
Zreiba Nuri A.
Maples John S.
Rayovac Corporation
Tumm Brian R.
Wilhelm Thomas D.
Winkelman Michael L.
LandOfFree
AgO cathode battery does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with AgO cathode battery, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and AgO cathode battery will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-861390