| abstract |
The present invention relates to a gel polymer battery manufacturing method and a lithium secondary battery employing the same, and more particularly, (1) coating a polymer blending layer in which an adhesive first polymer and a functional second polymer are dissolved in an organic solvent in a separator; Preparing a separator by drying; (2) inserting the separator prepared in step (1) between the anode and the cathode to produce an electrode group having a laminated structure and thermocompression bonding; (3) preparing a primary electrolyte solution containing a lithium salt and an organic solvent; (4) preparing a secondary electrolyte by mixing the functional second polymer and the crosslinking agent in an appropriate ratio in the primary electrolyte of step (3) or by adding the crosslinking agent alone; (5) preparing a battery by inserting the electrode group of step (2) into a packaging material and then pouring and sealing the secondary electrolyte solution of step (4); (6) swelling the separator coating layer by aging the battery prepared in step (5); And (7) a method for preparing an interfacial crosslinking gel polymer battery and a lithium secondary battery employing the same, including forming a gel by crosslinking the separator coating layer with an electrolyte, and crosslinking between the polymer electrolyte and the separator coating layer; By forming a gel, it is possible to form a uniform gel as compared with a conventional gel-type solid electrolyte, thereby preventing local current concentration due to inhomogeneity, interfacial stability between the electrolyte and the membrane coating layer, and the shape of the separator and the electrode plate. There is an advantage that the large current charge and discharge characteristics and cycle life characteristics according to the storage capacity is excellent.n n n n Interfacial Gel, Polymer Coating, Cell Stability, Functional Polymer, Interfacial Adhesion |