Electrolyte and lithium ion battery containing same

• Main Authors: SUN JIEYAN, CHEN JIE, XIONG WEI, MA BIN, LI GUILIN
• Format: Patent
• Language: Chinese; English
• Published: 20.05.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention provides an electrolyte and a lithium ion battery containing the electrolyte, the electrolyte comprises a lithium salt, an organic solvent and an additive, the additive comprises a first additive and a second additive, and the first additive is a compound with a structural formula as shown in a formula I. Compared with the prior art, the electrolyte provided by the invention contains the compound with the structural formula shown in the formula I, and can effectively improve the cycle performance and high-temperature storage performance of the lithium ion battery under high pressure. 本发明提供了一种电解液及含有该电解液的锂离子电池，包括锂盐、有机溶剂和添加剂，所述添加剂包括第一添加剂和第二添加剂，所述第一添加剂为如式Ⅰ结构式的化合物。相比于现有技术，本发明提供的电解液，含有式Ⅰ结构式的化合物，可有效改善锂离子电池在高压下的循环性能和高温存储性能。