A SEPARATOR, A METHOD AND AN APPARATUS FOR MANUFACTURING THE SAME

摘要

PURPOSE: A separator is provided to have high mechanical strength, high insulation, high dendrite resistance, and high ion conductivity. CONSTITUTION: A separator(100) comprises at least one cellulose fiber layer(110) and at least one nano fiber layer(120). The cellulose fiber layer consists of cellulose fiber of which thickness is 1-40 micron and average fiber diameter is 0.1-10 micron. A manufacturing method of the separator comprises a step of preparing an elongated sheet consisting of a cellulose fiber layer, and a step of forming the nano fiber layer on one side of the elongated sheet which is being returned.