▎ 摘　　要

NOVELTY - Synthesis of trisulfide dibismuth-oxidation graphene composite thermoelectric material comprises (i) dissolving boron trioxide (Bi(NO 3) in water bath under the condition of magnetic stirring in a water bath, dissolving hydrazinium thiocyanate (CH4N2O) under the magnetic stirring condition, (iii) introducing graphite oxide(325 meshes) into the mixed solution, where the adding amount is divided into 0.25 wt.%, 0.5 wt., 0.75 wt%, and 1 wt.% and (iv) slowly dropping the methanethiol solution in the step (2) to the mixed liquid, stirring uniformly, (v) dropping carbamide solution obtained in step (3) into a mixed solution of step (5), stirring uniformly; (vi) introducig mixed solution into the reaction kettle to react; (vii) centrifuging the reaction solution, cleaning and drying. USE - The method is useful for simply synthesizing bismuth trisulfide-oxidation-graphene composite thermoelectric material. ADVANTAGE - The method provides a non-toxic bismuth trisulfide-oxidation-graphene oxide composite thermoelectric material with low price, low toxicity, low characteristics, low thermal conductivity, and better thermo-electric performance. The method combines the simple hydrothermal synthesis technology and tubular sintering technology. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view showing the crystal structure of the Bi2S3.