Patent ID: 8252468

Claim:
A non-aqueous electrolyte secondary cell comprising: a positive electrode having a positive electrode active material; a negative electrode having a negative electrode active material; and a non-aqueous electrolyte containing a non-aqueous solvent and electrolytic salt, wherein: the non-aqueous solvent contains 20 to 80 volume % tertiary carboxylic acid ester at 25° C. and 1 atm; the non-aqueous electrolyte contains at least one halogenated benzene compound selected from the group consisting of 3-fluoroanisole and 3,5-difluoroanisole; the non-aqueous solvent further contains ethylene carbonate; the tertiary carboxylic acid ester is methyl trimethylacetate and/or ethyl trimethylacetate; and the content of the halogenated benzene compound is 0.2 to 4.5 mass parts out of 100 mass parts of a total mass of the non-aqueous solvent and the electrolytic salt.