▎ 摘　　要

NOVELTY - Preparing lithium-sulfur battery anode material comprises (i) preparing graphene oxide by Hummers method, (ii) placing graphene oxide, nano-sulfur powder, boric acid and urea according to mass ratio of 1:1-10:1-3:1-10 in planetary ball mill, ball milling under speed of 200-600 revolutions/minute for 6-8 hours to obtain mixture, where the ball to material ratio is 2-4:1, adding deionized water into mixture to obtain mixed solution, where the mass ratio of mixture and deionized water is 0.001-0.03:1, ultrasonically dispersing mixed solution in ultrasonic disperser under frequency of 35-60 kHz for 1-3 hours at room temperature and spray drying to obtain boron-nitrogen-oxygen co-doped graphene-sulfur composite three-dimensional structure lithium-sulfur battery anode material, where spray drying device utilizes atmospheric air pressure, the air volume is 2-8 cm3/minute, the air inlet temperature is 150-250 degrees C, the feeding rate is 1-10 ml/minute, the needle speed is 1 time/5-30 seconds. USE - The method is useful for preparing lithium-sulfur battery anode material. ADVANTAGE - The method is simple and increases sulfur content at anode material. The material has loose porous structure and high specific surface area.