▎ 摘　　要

NOVELTY - The method involves dissolving graphene oxide into deionized water and ultrasonically processing for 10 min to prepare the graphene oxide solution. The graphene oxide solution is added with three-dimensional porous polypyrrole, fully stirred and added with stannous chloride solution and hydrogen iodide solution. The solution is transferred to a reaction kettle. The mixed solution is added with sodium hydroxide solution after ultrasonic treatment. The obtained product is dried after washing to neutral by deionized water to obtain the polypyrrole/graphene/tin composite material. USE - Preparation method for polypyrrole/graphene/tin composite material. ADVANTAGE - The preparation process is simplified. The method is environmental-friendly and reliable. The dispersibility is good. The energy density and power density are good. The circulation performance is excellent. DESCRIPTION OF DRAWING(S) - The drawing shows a scanning electron microscopic image of polypyrrole/graphene/tin composite material.