Chemistry: electrical current producing apparatus – product – and – Sealed cell having gas prevention or elimation means – Prevention or elimination means is one of the cell...
Reexamination Certificate
2007-08-28
2007-08-28
Kalafut, Stephen J. (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Sealed cell having gas prevention or elimation means
Prevention or elimination means is one of the cell...
C429S217000, C429S218200, C429S223000
Reexamination Certificate
active
10887434
ABSTRACT:
The present invention relates to rechargeable nickel metal hydride batteries and methods for making the same. More particularly, the present invention relates to rechargeable nickel metal hydride batteries having a precharge in the negative electrode sufficient for oxidation prevention in the negative electrode. The present invention discloses a nickel metal hydride battery, wherein the precharge of the negative electrode may be supplied by a variety of sources. The positive active material of the positive electrode may have positive active particles, such as nickel hydroxide, having a precursor coating that incorporates cobalt material capable of forming a conductive network. Sources other than cobalt-containing materials in the positive electrode include hydrogen gas provided directly to the negative active material, nickel aluminum mixed with the negative active material, the etching of the negative active material with an alkaline solution and borohydride chemically charging the negative active material. Preferably, a majority of the precharge of the negative electrode is supplied by sources other than cobalt-containing materials in the positive electrode.
REFERENCES:
patent: 3951686 (1976-04-01), Ness et al.
patent: 3959018 (1976-05-01), Dunlop et al.
patent: 4004943 (1977-01-01), Boter
patent: 4049027 (1977-09-01), Seiger
patent: 4609599 (1986-09-01), Percheron et al.
patent: 4847174 (1989-07-01), Palmer et al.
patent: 4935318 (1990-06-01), Ikoma et al.
patent: 5032475 (1991-07-01), Hasebe et al.
patent: 5131920 (1992-07-01), Moriwaki et al.
patent: 5344728 (1994-09-01), Ovshinsky et al.
patent: 5348822 (1994-09-01), Ovshinsky et al.
patent: 5498403 (1996-03-01), Shin
patent: 5523182 (1996-06-01), Ovshinsky et al.
patent: 5536591 (1996-07-01), Fetcenko et al.
patent: 5695530 (1997-12-01), Hong et al.
patent: 5773163 (1998-06-01), Suzuki et al.
patent: 6042753 (2000-03-01), Izumi et al.
patent: 6268083 (2001-07-01), Iida et al.
patent: 6399247 (2002-06-01), Kitayama et al.
patent: 6444349 (2002-09-01), Berlureau et al.
patent: 6593024 (2003-07-01), Fetcenko et al.
patent: 2003/0031923 (2003-02-01), Aoshima et al.
Fetcenko Michael A.
Fierro Cristian
Koch John
Reichman Benjamin
Young Kwo
Kalafut Stephen J.
Ovonic Battery Company Inc.
Siskind Marvin S.
Svoboda Robert J.
LandOfFree
Nickel metal hydride battery design does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Nickel metal hydride battery design, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nickel metal hydride battery design will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3889703