Patent ID: 8795884
Filing Date: 2014-08-05
Classification: H01M,Y02E,Y02T

Abstract:
1. A nonaqueous secondary battery comprising a positive electrode including a positive electrode mixture layer, a negative electrode and a nonaqueous electrolyte, wherein the positive electrode mixture layer contains a lithium-containing complex oxide defined by the general formula (1) and has a density of 3.5 g/cm the nonaqueous electrolyte contains a solvent, an electrolyte salt, and a fluorinated nitrile compound including two or more cyano groups in molecules or a cyano group and an ester group in molecules, or triethyl-2-fluoro-2-phosphono-acetate; where, M an amount of the fluorinated nitrile compound added to the nonaqueous electrolyte is 0.005 to 1.0 mass %.