| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium ion secondary battery preventing deterioration in capacity due to repetition of charging/discharging, more specifically excellent in cycle life characteristics, in relating to an electrolytic solution or gel electrolyte for a lithium ion secondary battery and a lithium ion secondary battery including the electrolytic solution or gel electrolyte.SOLUTION: An electrolytic solution of the present invention is an electrolytic solution that is obtained by dissolving a first lithium salt in a nonaqueous solvent, and further mixed with an organic acid lithium-boron trifluoride complex, as a second lithium salt. |
