| abstract |
The present invention provides a non-aqueous electrolyte for lithium ion batteries and a lithium ion battery using the non-aqueous electrolyte. The non-aqueous electrolyte includes (a) a lithium salt, (b) a non-aqueous organic solvent, and (c) at least one compound represented by formula 1; Wherein, the non-aqueous electrolyte also includes at least one of the following components (d) and (e): (d) includes 1,3,6-hexanetrinitrile, glycerol trinitrile, 3-methoxyl A nitrile compound of at least one of propionitrile, and (e) vinyl sulfate. Through the synergistic effect between them, while protecting the positive electrode, the negative electrode also plays a certain protective role, and the membrane impedance is low, and the battery has better high-temperature storage performance, cycle performance and low-temperature charge-discharge performance. |