A PREPARATION METHOD OF MNO2/CARBON COMPOSITE, MNO2/CARBON COMPOSITE PREPARED BY THE SAME, AND LITHIUM/AIR SECONDARY CELL COMPRISING THE COMPOSITE

摘要

PURPOSE: A manufacturing method of an oxide manganese/carbon composite for a lithium/air secondary battery is provided to increase dispersity and binding force of carbon and manganese oxide by reducing a solution of carbon and potassium permanganate, and to obtain the lithium/air battery with improved charging and discharging cyclability. CONSTITUTION: A manufacturing method of an oxide manganese/carbon composite for a lithium/air secondary battery comprises: a step of manufacturing a metal permanganate solution by dissolving metal permanganate powder into a solvent; a step of dispersing carbon into the metal permanganate solution, and manufacturing a manganese oxide/carbon composite by using a reducing agent; and a step of mixing a catalyst which is manufactured in the second step into poly(vinylidene fluoride), and wetting the mixture into nickel foam. The lithium/air secondary battery comprises the manganese oxide/carbon composite as an air electrode.