Title:
LITHIUM CELL WITH IRON DISULFIDE CATHODE AND IMPROVED ELECTROLYTE
Document Type and Number:
WIPO Patent Application WO/2010/085406
Kind Code:
A8
Abstract:
A primary cell having an anode comprising lithium and a cathode comprising iron disulfide (FeS2) 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.
Inventors:
SLIGER MICHAEL DEAN (US)
ISSAEV NIKOLAI NIKOLAEVICH (US)
NAVOK ERIC (US)
YELM KENNETH EDWARD (US)
ISSAEV NIKOLAI NIKOLAEVICH (US)
NAVOK ERIC (US)
YELM KENNETH EDWARD (US)
Application Number:
PCT/US2010/020955
Publication Date:
March 10, 2011
Filing Date:
January 14, 2010
Export Citation:
Assignee:
GILLETTE CO (US)
SLIGER MICHAEL DEAN (US)
ISSAEV NIKOLAI NIKOLAEVICH (US)
NAVOK ERIC (US)
YELM KENNETH EDWARD (US)
SLIGER MICHAEL DEAN (US)
ISSAEV NIKOLAI NIKOLAEVICH (US)
NAVOK ERIC (US)
YELM KENNETH EDWARD (US)
International Classes:
H01M6/16; H01M4/58; H01M4/62; H01M4/66
Attorney, Agent or Firm:
THE GILLETTE COMPANY (The Procter & Gamble CompanyGlobal Patent Services,299 East Sixth Street,Sycamore Buildin, 4th Floor Cincinnati Ohio, US)
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