▎ 摘　　要

NOVELTY - Preparation of three-dimensional porous composite electrode material involves preparing 50 ml buffer solution of glycine/hydrochloric acid having a pH of 2-2.6, adding 5-10 mg graphene oxide and 0.25-0.5 mmol tin tetrachloride pentahydrate, stirring at room temperature for 10-30 minutes, ultrasonically processing for 10-30 minutes, obtaining a brownish yellow transparent solution, heating the solution to 60-80 degrees C, stirring for 2-6 hours, cooling to room temperature, centrifuging, obtaining two-dimensional tin oxide/graphene composite nanosheets, transferring 20-40 mg resultant nanosheets to 5-20 ml PTFE reactor, adding 3-18 ml pure water, stirring at room temperature for 10-30 minutes, ultrasonically processing for 30-60 minutes, reacting at 180 degrees C for 24-48 hours, obtaining a black gel-type sample, freeze-drying the gel-type sample for 24-48 hours, transferring resultant to a tube furnace, and calcining at 650 degrees C for 4-6 hours under argon protection atmosphere. USE - Preparation of three-dimensional porous composite electrode material used as anode of lithium-ion battery (claimed). ADVANTAGE - The method enables simple preparation of three-dimensional porous composite electrode material using readily available raw materials. The three-dimensional porous composite electrode material provides lithium-ion battery having high battery capacity of 450-600 mAhg-1 even after 5000 cycles at a current density of 10 A/g.