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:
Oct. 22, 2002
Filed:
Jul. 28, 2000
Norio Takami, Yokohama, JP;
Takahisa Ohsaki, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
The present invention provides a nonaqueous electrolyte secondary battery, comprising a jacket having a wall thickness not larger than 0.25 mm, a positive electrode housed in the jacket and containing a positive electrode active material, a negative electrode housed in the jacket and containing a negative electrode active material, and a nonaqueous electrolyte housed in the jacket, wherein the positive electrode active material comprises at least one kind of oxide selected from the group consisting of an oxide containing an element M, Li and Ni and an oxide containing an element M, Li, Ni and Co, the element M being at least one element selected from the group consisting of Al, B, Sn and Nb, and the pH of the positive electrode active material falls within a range of between 10 and 12.