| abstract |
The present invention relates to a non-aqueous electrolyte, including lithium salt, organic solvent and additive, the additive includes additive A and additive B, and the additive A is lithium difluorophosphate, lithium difluorobisoxalate, tetrafluorophosphate One or more of lithium oxalate phosphate; the additive B is triphenyl phosphorus oxide. The present invention enables the secondary battery to exert excellent cycle durability and high-temperature storage performance through the synergistic effect of additives. |