Patent ID: 7563538
Filing Date: 2009-07-21
Classification: C01G,C01P,H01M,Y02E

Abstract:
1. A nonaqueous electrolyte secondary battery comprising: a positive electrode having a positive electrode active material capable of intercalating and deintercalating lithium ion; a negative electrode having a negative electrode active material capable of intercalating and deintercalating lithium ion; and a nonaqueous electrolyte, the positive electrode active material containing both lithium cobalt oxide A in which 3 to 5 mol % of magnesium are homogeneously added and lithium cobalt oxide B in which 0.1 to 1 mol % of magnesium is homogeneously added which are mixed in a mixing ratio of lithium cobalt oxide A: lithium cobalt oxide B=2:8 to 8:2.