CARBON SPHERE-CATALYTIC OXIDE NANO COMPOSITES FOR LITHIUM-AIR SECONDARY BATTERY AND MANUFACTURING METHOD OF THE SAME

摘要

PURPOSE: A nanocomposite for a lithium-air secondary battery is provided to improve efficiency of an air electrode of a lithium-air secondary battery by efficiently combining carbon, thereby capable of providing a lithium-air secondary cell having innovative charging/discharging capacity. CONSTITUTION: A nanocomposite for a lithium-air secondary battery comprises: a step of stirring carbon precursor by distilled water, hydrothermal synthesis, and cooling at room temperature; a step of preparing carbon microsphere by dispersing and drying by using centrifugation and a dispersion media; a step of conducting ultrasonic treatment by stirring the carbon microsphere and a catalyst oxide together with distilled water; a step of aging and heat treatment; and a step of dispersion by using centrifugation and a dispersion media, and drying the dispersion to manufacture carbon microsphere-catalyst oxide composite.