| abstract |
An electrolytic solution and an electrochemical device are provided. An electrolytic solution includes an additive A and an additive B, and the content of the additive A in the electrolytic solution is 0.001% by mass to 10% by mass, and the electrolysis of the additive B is performed. Content in a liquid is 0.1 mass%-10 mass%, and the electrical conductivity in 25 degreeC of the said electrolyte solution is 4 mS / cm-12 mS / cm. The present invention can improve the cycle performance and storage performance of an electrochemical device, and in particular, can improve the cycle performance and storage performance of an electrochemical device at high temperature and high voltage, while at the same time achieving both low temperature performance. . [Selection] Figure 1 |