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:
Feb. 09, 2016
Filed:
Feb. 10, 2010
Meiten Koh, Settsu, JP;
Hiroyuki Arima, Settsu, JP;
Hideo Sakata, Settsu, JP;
Hitomi Nakazawa, Settsu, JP;
Meiten Koh, Settsu, JP;
Hiroyuki Arima, Settsu, JP;
Hideo Sakata, Settsu, JP;
Hitomi Nakazawa, Settsu, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
The invention provides a stable positive-electrode mixture slurry that is not subject to gelation, a positive electrode with abundant flexibility, and a lithium secondary battery with excellent battery characteristics. The slurry comprises a positive-electrode active material, a binder, and an organic solvent, the positive-electrode active material is a lithium-containing complex metal oxide represented by Formula: LiMMO(wherein 0.4≦x≦1; 0.3≦y≦1; Mis at least one selected from Ni or Mn; and Mis at least one selected from Co, Al, or Fe); and the binder comprises a fluorine-containing polymer represented by Composition Formula: (VDF)(TFE)(HFP)(wherein VDF is a structural unit from vinylidene fluoride; TFE is a structural unit from tetrafluoroethylene; HFP is a structural unit from hexafluoropropylene; and 0.45≦m≦1; 0≦n≦0.5; and 0≦l≦0.1, and m+n+l=1).