A kind of electrolyte containing novel lithium borate and battery using the lithium salt

Abstract

The invention discloses an electrolyte containing novel lithium borate and a battery with lithium salt. The electrolyte containing novel lithium borate comprises electrolyte lithium salt, novel lithium borate, a non-aqueous organic solvent and an additive. The structural formula of the novel lithium borate contains sulfonate groups, the electrolyte is good in high-temperature property as the novel lithium borate containing the sulfonate groups is used, and meanwhile, the internal resistance of the battery is not increased by the additive, therefore, the lithium ion battery is relatively good in property.

Description

technical field [0001] The invention relates to the field of lithium ion batteries, in particular to an electrolyte solution containing novel lithium borate and a battery using the lithium salt. Background technique [0002] Lithium secondary batteries have the advantages of high working voltage, high specific energy density, long cycle life, low self-discharge rate, no memory effect, and low environmental pollution. Ideal power source for power tools. At present, in the technical market, the negative electrode materials are mainly monopolized by graphite negative electrodes. The electrolyte generally adopts a mixed cyclic and linear carbonate system to take into account properties such as viscosity, solubility, and electrical conductivity, and various functional additives to meet the needs of lithium batteries. Comprehensive performance of ion batteries. [0003] Functional additives include film-forming additives, anti-overcharge additives, stabilizers, flame retardant a...

AI Technical Summary

Problems solved by technology

However, excessive use of sulfonate additives in the electrolyte often leads to an increase in the internal resistance of the battery, which has a greater negative impact on the rate-type battery

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