| 摘要 |
PROBLEM TO BE SOLVED: To prevent deterioration in capacity due to repetition of charge/discharge, concerning an electrolytic solution or gel electrolyte for a lithium ion secondary battery and a lithium ion secondary battery including the same, more specifically, to provide a lithium ion secondary battery excellent in cycle life characteristics.SOLUTION: In an electrolytic solution of the present invention including a first lithium salt dissolved in a nonaqueous solvent, (A) a lithium salt of an organic acid as a second lithium salt and (B) a boron compound are further mixed. |
