ELECTROLYTE SOLUTION FOR SECONDARY LITHIUM BATTERY AND SECONDARY LITHIUM BATTERY USING THE SAME

摘要

PURPOSE: An electrolyte for lithium secondary battery is provided to prevent oxidation of an electrolyte in a positive electrode surface, and to prevent decomposition of the electrolyte in high temperature condition. CONSTITUTION: An electrolyte for lithium secondary battery comprises lithium salt, non-aqueous organic solvent, and additives. The additives are one or more selected from vitamin G(riboflavin), vitamine B3(niacin), vitamin B4(adenine), vitamin B5(patothenic acid), vitamin H(biotin), vitamin M(folic acid), vitamin BX(4-aminobenzoic acid), vitamin D2(ergocalciferol) vitamin D3 cholecalciferol, vitamin K1 (phylloquinone), palmitoyl ascrobic acid, or sodium ascorbate. A comprised amount of the additives is 0.005-5 weight% based on total weight of the electrolyte.