Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2011-06-28
2011-06-28
Kalafut, Stephen J. (Department: 1727)
Metal working
Method of mechanical manufacture
Electrical device making
C429S199000, C429S217000, C429S329000
Reexamination Certificate
active
07967875
ABSTRACT:
This disclosure relates to methods of making a cathode for a lithium batter. The methods include: (a) treating a cathode current collector with flame or corona; (b) coating a slurry containing iron disulfide, a first solvent, and a binder onto the cathode current collector obtained from step (a) to form a coated cathode current collector, in which the slurry contains about 73-75% by weight solids and the binder contains a polymer selected from the group consisting of linear di- and tri-block copolymers, linear tri-block copolymers cross-linked with melamine resin, ethylene-propylene copolymers, ethylene-propylene-diene terpolymers, tri-block fluorinated thermoplastics, hydrogenated nitrile rubbers, fluoro-ethylene-vinyl ether copolymers, thermoplastic polyurethanes, thermoplastic olefins, and polyvinylidene fluoride homopolymers; and (c) drying the coated cathode current collector obtained from step (b) to provide a cathode, in which the cathode contains no more than 0.5% by volume of the first solvent and is capable of being bent to 180°. This disclosure also relates to methods of making a lithium battery.
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Boczer Christopher
Del Rosario Rosauro
Delnick Frank M.
Kang Minkoo
Pawlowska Lucyna M.
Fish & Richardson P.C.
Kalafut Stephen J.
The Gillette Company
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