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:
Apr. 22, 2003
Filed:
Mar. 23, 2000
Naoya Nakanishi, Tondabayashi, JP;
Kouichi Satoh, Itami, JP;
Kazuyasu Fujiwara, Sumoto, JP;
Toshiyuki Nohma, Hirakata, JP;
Ikuo Yonezu, Hirakata, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
In the nonaqueous secondary battery of this invention, a positive electrode includes, as an active material, a composite oxide represented by a composition formula, Li Mn Ni M O , wherein M is at least one element selected from the group consisting of B, Mg, Al, Ti, V, Fe, Co, Cu, Zn, Ga, Y, Zr, Nb, Mo and In; 1.20≦x≦1.80; y≧0.10; z≧0; y+z≦1.90; and 3.70≦q≦4.30, in a discharge state during fabrication of the nonaqueous secondary battery. As a result, the nonaqueous secondary battery can exhibit good charge-discharge cycle performance and can be fabricated at low cost.