ORGANIC ELECTROLYTE COMPOSITION FOR LITHIUM BATTERY, PRODUCTION METHOD THEREOF AND LITHIUM BATTERY USING THE SAME

摘要

PURPOSE: An organic electrolyte composition is provided to decrease the freezing point of an organic solvent without chemical reaction of a poly(dimethyl siloxane) particle with a lithium salt or the organic solvent and to obtain excellent charging and discharging properties even at low temperatures. CONSTITUTION: An organic electrolyte composition consists of poly(dimethylsiloxane) G particles, organic solvent, and salt with the size of 500nm or less. The organic solvent is one kinds selected from cyclic carbonates, linear carbonate, ether-based organic solvent, and ionic solvent or a mixed organic solvent thereof. The salt is at least one selected from lithium-based salts which can be dissociate by being dissolved into the organic solvent. The mixed amount of the poly(dimethylsiloxane) particle in the organic electrolyte composition is 0.1-20 weight%. [Reference numerals] (1) 1.1 LiPF_6/EC/DMC/poly(dimethylsiloxane) 3 wt.% addition, 25°C; (2) 1.1 LiPF_6/EC/DMC/poly(dimethylsiloxane) 3 wt.% addition, -30°C