| abstract |
PROBLEM TO BE SOLVED: To provide an electrolytic solution capable of suppressing gas generation and improving battery characteristics such as cycle characteristics and a battery using the same. A negative electrode 22 contains a negative electrode active material containing Sn as a constituent element. The separator 23 is impregnated with an electrolytic solution containing an organotin compound. The organotin compound forms a film on the surface of the negative electrode 22, captures lithium ions, and passes them to the negative electrode active material. Therefore, contact between the oxide film formed on the surface of the negative electrode 22 and lithium ions can be suppressed, and direct contact between the negative electrode 22 and the electrolytic solution can also be suppressed. [Selection] Figure 1 |