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Lithium-air batteries (LABs), in which lithium metal and oxygen are used as active materials for anode and cathode, respectively, have recently gained popularity owing to their much higher energy density than that of conventional Li-ion batteries (LIBs). However, the cathode side of LABs are opened to outside, which can induce the evaporation of liquid electrolyte and the inflow of impurity gases from outside air. In addition, the growth of lithium dendrite as well as the use of conventional separator containing flammable organic liquid electrolyte can affect the safety of batteries. Thus far, studies on solid electrolytes for protecting lithium metal have been conducted. Nevertheless, the solid electrolyte shoed the limitation in aspects of ionic conductivity and interfacial resistance between components. To address the issues, a gel polymer electrolyte prepared by impregnating a liquid electrolyte into a polymer matrix can reduce interfacial resistance and improve high ionic conductivity of electrolyte. In this study, PVDF-HFP based composite gel polymer electrolyte (CGPE) containing fibrous inorganic filler (LAGP) was prepared and its electrochemical properties were investigated. The CGPE was electrochemically stable up to 5.6 V vs. Li/Li+ and its ionic conductivity was 10–3 S cm–1 at 30 ℃. The Li/CGPE/Li symmetric cell showed very stable cyclability and long cycle life at the current density of 0.1 mA cm-2. Li-air cells were charge-discharge tested at a current density of 0.1 mA cm-2 in a limited capacity mode of 1000 mAh g-1. Cycle life was increased when the CGPE was used instead of liquid electrolyte. The use of CGPE in surpassed pure gel polymer electrolyte (GPE) as well as separator based liquid electrolyte in Li-air battery.