Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Reexamination Certificate
2005-01-11
2005-01-11
Bell, Bruce F. (Department: 1746)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
C429S229000, C429S231800, C429S232000
Reexamination Certificate
active
06841302
ABSTRACT:
An alkaline cell having an anode comprising zinc, an aqueous alkaline electrolyte, a cathode mixture comprising cathode active material comprising copper oxide or copper hydroxide. Graphitic carbon, preferably expanded graphite or graphitic carbon nanofibers are added to the cathode mixture thereby resulting in a sharp drop in cathode resistivity. The cathode active material preferably comprises between about 80 and 92 percent by weight of the cathode. The sharp drop in cathode resistivity resulting from the addition of expanded graphite or graphitic carbon nanofibers makes the cell suitable for use as a primary alkaline cell having good capacity. The graphitic carbon, preferably graphitic nanofibers comprise preferably between about 4 and 10 percent by weight of the cathode. The carbon nanofibers have an average diameter desirably less than 500 nanometers, preferably between about 50 and 300 nanometers.
REFERENCES:
patent: 1255283 (1918-02-01), Benner
patent: 1282057 (1918-10-01), Erwin
patent: 1564741 (1925-12-01), Wolfe
patent: 4060676 (1977-11-01), Day
patent: 5482798 (1996-01-01), Mototani
patent: 5594060 (1997-01-01), Alig
patent: 5744014 (1998-04-01), Gordon et al.
patent: 5846509 (1998-12-01), Alig
patent: 6156256 (2000-12-01), Kennel
patent: 6248478 (2001-06-01), Friend
patent: 54-101135 (1979-08-01), None
patent: 07014582 (1995-01-01), None
patent: WO 95302248 (1995-09-01), None
International Committee For Characterization and Terminology of Carbon, Journal Carbon, vol. 20, No. 5 (1982), pp. 445-449, no month available.
U.S. Appl. No. 09/658,042 filed Sep. 7, 2000 (Commonly Assigned to the Gillette Company).
Anglin David L.
Wang Francis P.
Xue J. Simon
Bell Bruce F.
Douglas Paul I.
Josephs Barry D.
Krivulka Thomas G.
The Gillette Company
LandOfFree
Alkaline cell with improved cathode does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Alkaline cell with improved cathode, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Alkaline cell with improved cathode will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3425580