Cathode composite material synthesis having high energy density for lithium secondary battery for electric vehicle and electrode manufacturing technology thereof

摘要

The present invention relates to the manufacture of a high capacity electrode by synthesizing an excellent Li₂MnO₃-based composite material Li(Li_xNi_yCo_zMn_wO₂) to improve the characteristics of an inactive Li₂MnO₃ material with a specific capacity of about 460 mAh/g. Here, a manufacturing method of a cathode material for a lithium secondary battery uses a Li₂MnO₃-based composite material Li(Li_xNi_yCo_zMn_wO₂) by reacting a starting material wherein a nickel nitrate solution, a manganese nitrate solution and a cobalt nitrate solution are mixed, with a complex agent by co-precipitation.