The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 27, 2012
Filed:
Jun. 01, 2011
Christopher Boczer, Shelton, CT (US);
Frank M. Delnick, Southbury, CT (US);
Rosario Del Rosauro, Danbury, CT (US);
Minkoo Kang, New Milford, CT (US);
Lucyna M. Pawlowska, Norwalk, CT (US);
Michael Pozin, Brookfield, CT (US);
Dharmendra Rana, Danbury, CT (US);
Maya Stevanovic, Framingham, MA (US);
John J. Weckesser, Oxford, CT (US);
Christopher Boczer, Shelton, CT (US);
Frank M. Delnick, Southbury, CT (US);
Rosario Del Rosauro, Danbury, CT (US);
Minkoo Kang, New Milford, CT (US);
Lucyna M. Pawlowska, Norwalk, CT (US);
Michael Pozin, Brookfield, CT (US);
Dharmendra Rana, Danbury, CT (US);
Maya Stevanovic, Framingham, MA (US);
John J. Weckesser, Oxford, CT (US);
The Gillette Company, Boston, MA (US);
Abstract
This disclosure relates to methods of making a cathode for a lithium battery. The batteries 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.