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:
Jan. 27, 2004
Filed:
Feb. 26, 2001
Tatsuji Numata, Tokyo, JP;
Chika Kanbe, Tokyo, JP;
Akira Kobayashi, Tokyo, JP;
Masato Shirakata, Tokyo, JP;
Masatomo Yonezawa, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A positive electrode of a nonaqueous electrolyte solution secondary battery comprises (A) a lithium-manganese composite oxide and (B1) at least one lithium-nickel composite oxide which has a specific surface area X of 0.3≦X (m /g) and which is selected from a group consisting of LiNiO , Li NiO , LiNi O , Li Ni O and LiNi M O (0<x≦0.5 is satisfied, and M represents at least one metal element selected from a group consisting of Co, Mn, Al, Fe, Cu and Sr), whereby it is possible to obtain a nonaqueous electrolyte solution secondary battery which is superior in battery properties, especially charge and discharge cycle properties, retention properties and safety.