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. 09, 2010
Filed:
May. 28, 2003
Kensuke Nakura, Hirakata, JP;
Takafumi Oura, Shijonawate, JP;
Mitsuhiro Takeno, Settsu, JP;
Shuji Tsutsumi, Ikoma, JP;
Kazuhiro Okamura, Hirakata, JP;
Kensuke Nakura, Hirakata, JP;
Takafumi Oura, Shijonawate, JP;
Mitsuhiro Takeno, Settsu, JP;
Shuji Tsutsumi, Ikoma, JP;
Kazuhiro Okamura, Hirakata, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A non-aqueous electrolyte secondary battery comprises a negative electrode including a negative electrode active material, a positive electrode including a positive electrode active material, and a non-aqueous electrolyte; the positive electrode active material is LiNiMnCoO, wherein y and z satisfy 0<y≦0.5, 0≦z≦0.5, and 0<y+z≦0.75; and an upper limit voltage for charging the non-aqueous electrolyte secondary battery is 4.25 to 4.70 V. It is possible to obtain a non-aqueous electrolyte secondary with high capacity, high reliability, and long life by properly setting the composition of a composite oxide of lithium which is a positive electrode active material and the charging conditions of the battery using this composite oxide of lithium as a positive electrode active material as described above.