The invention relates to a preparation method for a
lithium ion battery negative
electrode material, and belongs to the technical field of a
lithium ion battery. The preparation method comprises the steps of taking and placing
silicate glass in a ball-milling tank, adding a
sodium chloride solution for ball-milling, and sieving to obtain
silicate glass
powder; taking and placing Arabic gum and
tragacanth gum in the ball-milling tank for ball-milling, and sieving to obtain
tragacanth gum and Arabic gun mixture power; mixing the
silicate glass ball-milling
powder, the Arabic gum and the
tragacanth gum, adding
zinc powder, and performing stirring to obtain a
colloid powder mixture; filling the
colloid powder mixture in a die, performing pressing and pressure preservation, placing the die in abaking box, and performing standing and cooling to a
room temperature after
thermal curing to obtain a cured material; and placing the cured material in a tubular
atmosphere furnace, introducing
nitrogen to remove air, controlling a temperature, performing heat preservation and
carbonization, and performing standing and cooling to the
room temperature, thereby obtaining a
silicon carbon compositenegative
electrode material. The obtained negative
electrode material has good rate performance, high capacity and good
conductivity, and the application of the
silicon negative
electrode material isexpanded by electrical contact.