SEPARATOR FOR BATTERY COATED BY POLYURETHANE POLYMER AND LI/SOCL2 BATTERY COMPRISING THE SAME

摘要

A separator for a battery coated with a polyurethane polymer is provided to prevent a voltage delay phenomenon by virtue of excellent physical and chemical properties derived from the polyurethane polymer, to ensure good insulation between a cathode and an anode, and to impart high energy density to a Li/SOCl2 battery. A separator for a battery comprises glass fibers coated with a polyurethane polymer compound. The polyurethane polymer compound is coated in an amount of 0.1-5 wt%. The polyurethane polymer compound contains an amide(-NCO-) group. The coating is formed by a coating process selected from the group consisting of spray coating, dip coating, screen printing, spin coating and ink spraying. The separator has a thickness of 250-400 micrometers.