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. 07, 2010
Filed:
Nov. 19, 2003
Toshiki Maeda, Niihama, JP;
Hirofumi Iisaka, Toyota, JP;
Satoru Suzuki, Kariya, JP;
Manabu Yamada, Kariya, JP;
Toshiki Maeda, Niihama, JP;
Hirofumi Iisaka, Toyota, JP;
Satoru Suzuki, Kariya, JP;
Manabu Yamada, Kariya, JP;
Sumitomo Metal Mining Co., Ltd., Tokyo, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Denso Corporation, Kariya-shi, Aichi-ken, JP;
Abstract
A lithium-nickel complex oxide material for active material for positive electrode of a lithium secondary battery is provided and expressed by the general formula Li(NiCo)MO(where, 0.98≦x≦1.10, 0.05≦y≦0.4, 0.01≦z≦0.2, M=at least one element selected from the group of Al, Zn, Ti and Mg), wherein according to Rietveld analysis, the Li site occupancy rate for the Li site in the crystal is 98% or greater, and the average particle size of the spherical secondary particles is 5 μm to 15 μm, and wherein the difference in specific surface area between before and after the washing process is 1.0 m/g or less.