DRY POLYMER ELECTROLYTE MEMBRANE CONTAINING CAPSULATED ELECTROLYTE SOLUTION, PREPARATION METHOD THEREOF AND PREPARATION METHOD OF LITHIUM POLYMER BATTERY USING THE MEMBRANE

摘要

PURPOSE: A dry polymer electrolyte membrane containing the capsulated electrolyte solution, its preparation method and a method for preparing a lithium polymer battery using the membrane are provided, to improve the ion conductivity and the mechanical properties of a polymer electrolyte by breaking a microcapsule physically to disperse the electrolyte solution inside the microcapsule into the dry polymer membrane. CONSTITUTION: The dry polymer electrolyte membrane(1A) comprises a supporter polymer; and an electrolyte storing means which is mixed with the supporter polymer and where an electrolyte solution is filled. Preferably the storing means is a capsule, and the electrolyte solution is an electrolyte solution containing a lithium salt. The preparation method of the electrolyte membrane comprises the steps of preparing the electrolyte storing means filled with an electrolyte solution; mixing an organic solvent with a supporter polymer to form the polymer slurry; distributing the storing means inside the polymer slurry; spreading the polymer slurry to form a storing means-dispersed polymer electrolyte; and volatilizing the organic solvent in the polymer electrolyte to prepare a dry polymer electrolyte membrane(1A).