Electrolyte and lithium secondary battery comprising same

The invention belongs to the technical field of electrolytes, and particularly relates to an electrolyte and a lithium secondary battery containing the electrolyte. The invention discloses the electrolyte which comprises a non-aqueous organic solvent, a lithium salt and an additive, the additive comprises a compound A, the structural formula of the compound A is shown in the specification, X is C or Si, and R1 and R2 are respectively and independently selected from one of an S-containing group, a P-containing group and an Si-containing group. 本申请属于电解液技术领域，具体涉及电解液及包含该电解液的锂二次电池。本发明公开了一种电解液，包括非水有机溶剂、锂盐和添加剂，所述添加剂包括化合物A，所述化合物A的结构式为：其中：X为C或Si，R1、R2分别独立选自含S基团、含P基团、含Si基团中的一种。