| 摘要 |
The present invention relates to a method of manufacturing a heat-resistant three-layered separator for secondary batteries and a separator manufactured thereby. The purpose of the present invention is to provide a method of manufacturing a heat-resistant three-layered separator for secondary batteries, by using an electrospinning machine with a nozzle block partitioned into three irradiation segments in a moving direction thereof and continuously electrospinning an inorganic polymer and a heat-resistant polymer through each of the irradiation segments to make a separator, thereby being capable of producing a multi-layered separator with improved heat resistance and consequentially improving thermostability. The method of the present invention comprises the steps of: preparing a solution by dissolving a first inorganic polymer filling a first feeding device in an organic solvent and electrospinning the solution on a collector to form a first inorganic polymer electrospun nonwoven; preparing a solution by dissolving a heat-resistant polymer filling a second feeding device in an organic solvent and electrospinning the solution on the top surface of the first inorganic polymer electrospun nonwoven to stack a heat-resistant electrospun nonwoven; and preparing a solution by dissolving a second inorganic polymer filling a third feeding device in an organic solvent and electrospinning the solution on the top surface of the heat-resistant electrospun nonwoven to stack a second inorganic polymer electrospun nonwoven. |
