Patent ID: 7642014
Filing Date: 2010-01-05
Classification: H01M,Y02E,Y02P

Abstract:
1. A nonaqueous electrolyte secondary battery, comprising: a positive electrode containing a positive electrode active material containing a lithium-containing composite metal oxide; a negative electrode; and a nonaqueous electrolyte; wherein said lithium-containing composite metal oxide has a composition represented by formula (3) given below: where M is at least one element selected from the group consisting of Co and Ni, M2 is at least one element selected from the group consisting of Mg and Fe, M3 is at least one element selected from the group consisting of Al and Ti, the molar ratio w is larger than 0, the molar ratio s is larger than 0 and smaller than 0.3, the molar ratio t is smaller than 1, the molar ratio v is not smaller than 1−s and smaller than 1, and the sum of v, w, s and t is 2.