Abstract: A method for producing nano-sized lithium-cobalt oxide is provided by using flame-spray pyrolysis. The method comprises the steps of: spraying minute droplets, which is a solution dissolved lithium salt with cobalt salt at room temperature; atomizing the minute droplets through rapid expansion into a high temperature environment generated by combusting oxygen and hydrogen; decomposing and oxidizing the atomized minute droplets thermally at high temperature to produce nano-sized oxides in gaseous phase: and collecting the produced nano-sized composite oxides particles. The produced nano-sized lithium-cobalt oxide can be applied to a highly efficient lithium battery as the electrode materials and a thin film type of battery as well as to a miniaturized battery.

Abstract: An apparatus and method is provided for recovering lithium cobalt oxide from spent lithium batteries. The method of recovering lithium cobalt oxide comprises the steps of: separating the cathodes from spent lithium batteries by dismantling; producing lithium cobalt oxide by reacting the cathodes with a strong alkali solution under a certain hydrothermal condition; cooling the lithium cobalt oxide to crystallize; and cleansing the synthesized lithium cobalt oxide to remove foreign objects. The apparatus for recovering lithium cobalt oxide comprises a reactor main body 300 having a sealing cap 320 on the upper section and an agitator 130; an outer reaction container 200 installed inside the reactor main body 300; and an inner reaction container 100 installed inside the outer reaction container 200. The inner reaction container 100 comprises a plurality of holes on the upper section and a separating cap 240.

Abstract: An apparatus and method is provided for recovering lithium cobalt oxide from spent lithium batteries. The method of recovering lithium cobalt oxide comprises the steps of: separating the anodes by dismantling the spent lithium batteries; obtaining lithium cobalt oxide by reacting the anodes with a strong alkali solution under a certain hydrothermal condition; cooling the lithium cobalt oxide to crystallize; and cleansing the synthesized lithium cobalt oxide to remove foreign objects. The apparatus for recovering lithium cobalt oxide comprises a reactor main body 300 having a sealing cap 320 on the upper section and an agitator 130; an outer reacting container 200 installed inside the reactor main body 300; and an inner reacting container 100 installed inside the outer reacting container 200. The inner reacting container 100 comprises a plurality of holes on the upper section and a separating cap 240.

Abstract: An apparatus and method for producing the nano-sized lithium-cobalt oxide using flame-spraying pyrolysis is provided. The method of producing a nano-sized lithium-cobalt oxide comprising the steps of: spraying minute droplets formed at normal temperature from a solution dissolved with a certain ratio of lithium salt and cobalt salt; atomizing the minute droplets through rapid expansion by spraying into a high temperature environment generated by the combustion of oxygen and hydrogen; decomposing the atomized minute droplets thermally at high temperature. An apparatus for producing a nano-sized lithium-cobalt oxide by utilizing a flame spraying pyrolysis comprises a minute droplet generating section (100), a combusting section (200) and a particle collecting section (300). The produced nano-sized lithium-cobalt oxide can be applied to a highly efficient lithium battery.