Lithium ion battery electrolyte

The invention discloses a lithium ion battery electrolyte, the lithium ion battery electrolyte comprises an organic solvent and a lithium salt, the organic solvent comprises a cyclic ether solvent and a carbonic ester solvent, the structure of the cyclic ether solvent is as shown in the following formula I, and in the formula I, R1 and R2 are as shown in the specification. The electrolyte disclosed by the invention can solve the problem of poor wettability of a high-compaction-density electrode plate and the electrolyte, so that the low-temperature performance of the lithium iron phosphate battery is improved, meanwhile, the normal-temperature and high-temperature cycle performance is not influenced or improved, and the service life of the lithium iron phosphate battery is effectively prolonged. # imgabs0 # 本发明公开了一种锂离子电池电解液，所述锂离子电池电解液包括有机溶剂和锂盐，其中，所述有机溶剂包含环状醚类溶剂和碳酸酯类溶剂，所述环状醚类溶剂的结构如下式I所示，式I中，R1和R2如文中所述。本发明的电解液能够解决高压实密度电极片与电解液浸润性差的问题，使磷酸铁锂电池的低温性能得到改善，同时常温和高温循环性能不受影响或得到改善，有效延长磷酸铁锂电池的使用寿命。#imgabs0#