Electrolyte with high flame retardation performance and electrochemical performance and lithium ion battery

• Main Authors: XU JINFU, ZHOU SHAOYUN, ZHOU SHUNWU, HE YUNPENG, LIU JIANSHENG, HUANG DONGHAI
• Format: Patent
• Language: Chinese; English
• Published: 19.12.2012
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses electrolyte with a high flame retardation performance and an electrochemical performance for a lithium ion battery. The electrolyte comprises a solvent, lithium salt, a flame retardant and an additive, wherein the additive is one or several of halogenated organic compound, cyclic carbonate compound comprising unsaturated bonds or non-symmetrical chain carbonate ester compound comprising unsaturated bonds, the dosage of the lithium is 0.6-1.5mol/L, the dosage of the flame retardant occupies 1-70% of the total mass of the electrolyte, and the dosage of the additive occupies 0.1-15% of the total mass of the electrolyte. According to the electrolyte disclosed by the invention, by adding the flame retardant in the electrolyte for the lithium ion battery and adding the additive which can be used for restraining the flame retardant from degrading the electromechanical performance of the electrolyte at the same time, thus the electrolyte has the flame retardation performance or non-inflammabil