▎ 摘　　要

NOVELTY - Preparation of sodium ion battery titanium dioxide/graphene composite negative electrode material comprises mixing 20-100 mg graphene and 30-300 mL deionized water, ultrasonic treating for 30-180 minutes, adding 0.1-2.5 g titanium tetrachloride, stirring, ultrasonic treating for 30-120 minutes, feeding to hydrothermal synthesis reactor, reacting at 120-260 degrees C for 3-40 hours, quenching to room temperature, centrifuging, and freeze-drying. USE - Method for preparing sodium ion battery titanium dioxide/graphene composite negative electrode material. ADVANTAGE - The material has good cycle life, high electric conductivity, and improved physical and chemical stability and electrochemical performance. The preparation method is low cost and suitable for industrial production.