Patent ID: 6468693
Filing Date: 2002-10-22
Classification: H01M,Y02E

Abstract:
A nonaqueous electrolyte secondary battery, comprising a jacket formed of a laminate film having a thickness of 0.2 mm or less and containing a metal layer and a resin layer laminated on one or both sides of the metal layer, 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 said positive electrode active material comprises at least one kind of oxide selected from the group consisting of an oxide containing the elements M, Li and Ni and an oxide containing the elements M, Li, Ni and Co, wherein said element M being at least one element selected from the group consisting of Al, B, Sn and Nb, and the pH of said positive electrode active material falls within a range of between 10 and 12.