| 摘要 |
PURPOSE: A high-power negative electrode material for lithium secondary battery is provided to have low volume change due to continuous charging/discharging reaction and initial irreversible capacity, thereby having high power, high capacity, and charging/discharging properties of high rate, and improving cycle properties. CONSTITUTION: A manufacturing method of a high-power negative electrode material comprises: a step of mixing lithium carbonate, vanadium oxide, a first metal component, and a second metal component with the ratio of Li_1.1V_(0.9-2x)(M1)_x(M2)_xO_2(x=0.01~0.09); a step of milling the mixed precursor to have the average particle diameter of 100 nm ? 20 micron; a step of heat-treating the precursor in gas phase in which inert gas and hydrogen gas are mixed by putting the milled precursor into a tubular furnace; and a step of cooling and crushing the heat-treated precursor, filtering the precursor powder by a sieve of 200-270 mesh. |
