MANUFACTURING METHOD OF POLAR PLATE FOR LITHIUM SECONDARY BATTERY, POLAR PLATE FOR LITHIUM SECONDARY BATTERY USING THE SAME, AND LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To solve problems related to quality, where a polar plate becomes longer due to an increase in the number of rolling times and a mixture layer is peeled partially, when the polar plate is rolled to increase its density.

SOLUTION: A lithium secondary battery comprises: a positive electrode made of a composite lithium oxide; a negative electrode made of a material for retaining lithium; a separator; and an electrolyte made of a nonaqueous solvent. In the manufacturing method of a lithium secondary battery polar plate, at least one of the positive electrode and negative electrode is coated with an inorganic oxide filler and a second binder, and paste made of an organic solvent for drying to adhere and form a porous film layer for increasing polar plate density in the lithium secondary battery.

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