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:
Dec. 13, 2011
Filed:
Jan. 20, 2009
Michael Sliger, New Milford, CT (US);
Nikolai N. Issaev, Woodbridge, CT (US);
Eric Navok, Stamford, CT (US);
Kenneth E. Yelm, Hamilton, OH (US);
Michael Sliger, New Milford, CT (US);
Nikolai N. Issaev, Woodbridge, CT (US);
Eric Navok, Stamford, CT (US);
Kenneth E. Yelm, Hamilton, OH (US);
The Gillette Company, Boston, MA (US);
Abstract
A primary cell having an anode comprising lithium and a cathode comprising iron disulfide (FeS) and carbon particles. The electrolyte comprises a lithium salt dissolved in a solvent mixture which contains 1,3-dioxolane and isosorbide dimethyl ether. The solvent mixture may comprise 1,3-dioxolane, 1,2-dimethoxyethane and additive isosorbide dimethyl ether. The isosorbide dimethyl ether comprises typically between about 2 and 15 percent by weight of the solvent mixture and improves cell service life and performance. A cathode slurry is prepared comprising iron disulfide powder, carbon, binder, and a liquid solvent. The mixture is coated onto a conductive substrate and solvent evaporated leaving a dry cathode coating on the substrate. The anode and cathode can be spirally wound with separator therebetween and inserted into the cell casing with electrolyte then added.