Local high-concentration diluted electrolyte and preparation method thereof

• Main Authors: ZHOU SUPING, GUAN TIANYU, LIU ZHENG, XU ZELIN, HUANG TAOJING, ZENG QINGGUANG, DENG KUIRONG, OUYANG WEI
• Format: Patent
• Language: Chinese; English
• Published: 25.02.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to a local high-concentration diluted electrolyte and a preparation method thereof, and belongs to the field of lithium ion batteries. The local high-concentration diluted electrolyte comprises lithium salt, a solvent and a diluent, and the molar ratio of the lithium salt to the solvent to the diluent is (0.5-1): (1-2): 1. The local high-concentration diluted electrolyte is high in ionic conductivity and good in cycling stability, and the preparation method is simple, easy to implement and low in cost. 本发明涉及一种局部高浓度稀释电解液及其制备方法，属于锂离子电池领域。所述局部高浓度稀释电解液包括锂盐、溶剂和稀释剂，所述锂盐、溶剂和稀释剂的摩尔比为锂盐：溶剂：稀释剂0.5-1:1-2:1。本发明的局部高浓度稀释电解液的离子电导率高、循环稳定性好，该制备方法简单易行，成本低。