| 摘要 |
The present invention provides a lithium ion secondary battery satisfactory in cycle property and an electrolyte for a lithium ion secondary battery capable of realizing the aforementioned lithium ion secondary battery, by using an electrolyte for a lithium ion secondary battery, comprising a group of additives and a solvent, and the group of additives includes (A) an additive having two or more polymerizable functional groups in the molecule thereof, and (B) an additive having one polymerizable functional group in the molecule thereof, wherein the mixing ratio between the component (A) and the component (B), in terms of component (A)/component (B) (mass ratio), is 0.01/99.99 to 99/1, and the content of the group of additives is 0.0001 % by mass to 10% by mass. |
