▎ 摘　　要

NOVELTY - Preparing carbon nano-tube lithium battery negative electrode composite material involves adding the polyvinylidene fluoride and carbon nano-tube into the stirring device, adding catalyst into the stirring device, mixing and stirring to obtain the mixed solution, adding the nano silicon powder graphene, additive respectively the mixed solution, continuously stirring to obtain slurry, solid-liquid separating the slurry, after separating the obtained solid is dried out to obtain the material, introducing the material into the inert gas, heating up, naturally cooling to room temperature to obtain the carbon nano-tube negative electrode. USE - Method for preparing carbon nano-tube lithium battery negative electrode composite material. ADVANTAGE - The method enables to improve the capacity of the battery, multiplying power, circulating and safety performance, fast preparation, good dispersibility, controllable size, with good electrochemical performance.