▎ 摘　　要

NOVELTY - Preparing nitride-loaded titanium dioxide negative electrode material involves adopting melamine and urea under condition of catalyst and methanol, adding control stages of urea and reaction conditions to obtain two-dimensional graphene-like structure of nitride precursor slurry. The obtained slurry is mixed with titanium dioxide and sintered at high temperature to obtain nitride loading titanium dioxide cathode material which is prepared by weighing melamine and urea according to certain mass ratio. Urea has into four parts which is U1, U2, U3 and U4. USE - Method for preparing nitride-loaded titanium dioxide negative electrode material for lithium battery. ADVANTAGE - The method enables to prepare nitride-loaded titanium dioxide negative electrode material in cost effective manner which has elasticity modulus, good charging and discharging performance and circulation performance, high cell specific capacity, Mohs hardness, excellent mechanical property and mild reaction condition which is easy to control, and achieves good cost performance. DETAILED DESCRIPTION - Preparing nitride-loaded titanium dioxide negative electrode material involves adopting melamine and urea under condition of catalyst and methanol, adding control stages of urea and reaction conditions to obtain two-dimensional graphene-like structure of nitride precursor slurry. The obtained slurry is mixed with titanium dioxide and sintered at high temperature to obtain nitride loading titanium dioxide cathode material which is prepared by weighing melamine and urea according to certain mass ratio. Urea has into four parts which is U1, U2, U3 and U4. Butanol is added in reaction kettle equipped with stirrer, condenser pipe, thermometer and use 30% sodium hydroxide solution to adjust pH to alkaline and increase the temperature. U2 is added into reaction kettle and temperature is raised and preserved heat for certain time, then use acid to adjust pH value to acidity. Then add U3, heated and kept for certain time. The melamine is added, reduced the temperature reaction for certain period of time and reaction is processed by using sodium hydroxide solution to keep reaction solution is alkaline, cooled the reaction mixture and add U4 reaction for certain period of time, and keep alkaline. The solution is cooled to obtain precursor slurry. The precursor slurry is heated under reduced pressure to evaporate water, and then mixed with titanium dioxide in certain mass ratio, stirred uniformly and added into muffle furnace, sintered at high temperature under protection of nitrogen and make the volume shrink, increases density to obtain nitride loaded titanium dioxide cathode material.