| abstract |
An electrochemical device, comprising a positive electrode, a negative electrode, and an electrolyte, wherein the electrolyte comprises an anion of a phosphorus pentoxide functional group of the specific structure. By adding the anion to the electrolyte, both the low-temperature discharge performance and the high-temperature storage performance of the electrochemical device can be improved and considered, and the cycle stability of the electrochemical device at room temperature and high temperature can be improved. |