Nonaqueous electrolyte secondary battery

1. A non-aqueous electrolyte secondary battery comprising:

a positive electrode including a positive electrode active material that comprises a Ni-containing lithium composite oxide as a main component;

a negative electrode; and

a non-aqueous electrolyte;

wherein the non-aqueous electrolyte includes:

a non-aqueous solvent including a fluorine-containing cyclic carbonate;

an isocyanuric acid derivative represented by the formula below:

wherein R 1 to R 3 are each independently —C n H 2n —CH═CH 2 or hydrogen, provided that at least one of R 1 to R 3 is —C n H 2n —CH═CH 2 ; and n is an integer; and

a cyclic carboxylic anhydride represented by the formula below:

wherein R 4 to R 7 are each independently hydrogen, an alkyl group, an alkene group, or an aryl group.

2. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the content of the fluorine-containing cyclic carbonate is 0.1 vol % or more and 30 vol % or less based on the total volume of the non-aqueous solvent.

3. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the content of the cyclic carboxylic anhydride is 0.1 mass % or more and 1.5 mass % or less based on the total mass of the non-aqueous electrolyte.

4. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the content of the isocyanuric acid derivative is 0.1 mass % or more and 1.5 mass % or less based on the total mass of the non-aqueous electrolyte.

5. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the cyclic carboxylic anhydride includes diglycolic anhydride.

6. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the isocyanuric acid derivative includes triallyl isocyanurate.