PROCESS FOR MANUFACTURING LITHIUM MANGANESE OXIDE WITH SPINEL STRUCTURE AS A CATHODE MATERIAL OF LITHIUM RECHARGEABLE BATTERY USING LOW TEMPERATURE EUTECTIC SELF-MIXING METHOD

摘要

The present invention utilizes a spontaneous eutectic mixing phenomenon, and performs a heat treatment step of precisely controlling the reaction atmosphere that suppresses crystal growth and promotes crystal nucleation at 250-400 ° C., thereby allowing lithium having a single-phase spinel structure only by a low temperature heat treatment step. A method for economically producing manganese oxide, comprising: a first step of weighing two or more metal compounds in a molar ratio having a melting point between 25-200 ° C. with a difference in melting point between 5 and 50 ° C .; And a third step of self-mixing eutectic at a temperature between 150 [deg.] C. to obtain a homogeneous fluid mixture and a third step of calcination and sintering the mixture at low temperatures between 200-400 [deg.] C.;The method for producing spinel lithium / manganese oxide according to the present invention eliminates the crushing, mixing and assembly processes, intermediate heat treatment and high temperature sintering processes, which are essential in the conventional method, and reduces the process cost since only the low temperature heat treatment process is performed. It can be effective.;Self-mixing eutectic, low temperature heat treatment, lithium / manganese oxide