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. 24, 2020
Filed:
May. 28, 2012
Tomoko Iwanaga, Ehime, JP;
Hideo Sasaoka, Ehime, JP;
Satoshi Matsumoto, Ehime, JP;
Yutaka Kawatate, Osaka, JP;
Shinji Arimoto, Osaka, JP;
Tomoko Iwanaga, Ehime, JP;
Hideo Sasaoka, Ehime, JP;
Satoshi Matsumoto, Ehime, JP;
Yutaka Kawatate, Osaka, JP;
Shinji Arimoto, Osaka, JP;
SUMITOMO METAL MINING CO., LTD., Tokyo, JP;
PANASONIC CORPORATION, Kadoma-shi, JP;
Abstract
A positive electrode active material for a nonaqueous electrolyte secondary battery that is constituted by a lithium nickel composite oxide that combines a high capacity with excellent thermal stability, a manufacturing method suitable for industrial production, and a nonaqueous electrolyte secondary battery of high safety. A positive electrode active material for a nonaqueous electrolyte secondary battery includes a lithium nickel composite oxide represented by the following composition formula (1):LiNiM1O  (1)(where M1 represents at least one element selected from transition metal elements other than Ni, elements of the second group of the Periodic System and elements of the thirteenth group of the Periodic System; a satisfies the condition 0.01≤a≤0.5; and b satisfies the condition 0.85≤b≤1.05). The content of carbon in the lithium nickel composite oxide is equal to or less than 0.08% by mass.