▎ 摘　　要

NOVELTY - Preparing a modified graphene poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) composite material comprises (i) dispersing reduced graphene oxide nanosheets, dispersing, stirring, cooling, filtering, washing and drying, (ii) ultrasonic processing functional reducing graphene oxide in de-ionized water, mixing, stirring and vacuum drying, (iii) adding sodium polystyrene sulfonate and 3,4-ethylene dioxygenthiofuran into container, filling, stirring, and (iv) adding nano-metal granule modified reduction-oxidation graphene nano sheet into de-ionized water, ultrasonically dispersing. USE - The method is useful for preparing a modified graphene poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) composite material. ADVANTAGE - The material has high electrical conductivity. DETAILED DESCRIPTION - Preparing a modified graphene poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) composite material comprises (i) dispersing the reduced graphene oxide nanosheets in the dispersion with an ultrasonic homogenizer, dispersing each 10-90 mg of oxidized graphene nano-sheets into the 10-1000 ml dispersion liquid, placing the dispersed material into thiophenol and isoamyl nitrite at 20-200 degrees C, strongly stirring for 1-48 hours, cooling to room temperature, filtering, washing and drying in a vacuum drying box at 10-200 degrees C and drying for 1-48 hours and reducing graphene oxide nanodispersion tablet with -SH group was dried and then functionalized in deionized water with sodium sulfamate salt hydrate, (ii) ultrasonic processing the functional reducing graphene oxide in de-ionized water for 1-48 hours, mixing 0.01-1 mol/l metal nitrate aqueous solution with the functionalized of reduction oxidation graphene nano suspending liquid and ultrasonically processing for 1-48 hours, each 10-1000 mg of reducing graphene oxide corresponding to 10-1000 ml of the metal nitrate aqueous solution, adding 0.1 mol/l sodium citrate into 10-1000 ml mixture, heating the mixture to 10-200 degrees C under the nitrogen atmosphere, and stirring at the current temperature for 1-48 hours, vacuum drying the mixture in box to drying at 10-200 degrees C for 1-48 hours to obtain nano-metal granule modified reduction-oxidation graphene nano sheet, (iii) adding the sodium polystyrene sulfonate and 3,4-ethylene dioxygenthiofuran into container, filling with de-ionized water, where the mass of polystyrene sulfonate and 3,4-ethylenedioxythiophene are the same, and each 0.1-100 g of sodium polystyrene sulfonate corresponds to 10-1000 ml of de-ionized water, continuing adding 10-1000 ml 0.01-1 mol/l metal nitrate aqueous solution , stirring for 1-100 minutes, adding proper amount of 0.01-1 mol/l nitroxyl into solution, stirring for 1-48 hours in the environment of 10-100 degrees C to obtain a dark blue nano-metal particle modified poly (3,4-ethylenedioxythiophene), poly(styrenesulfonate) composite material, and (iv) adding nano-metal granule modified reduction-oxidation graphene nano sheet obtained in the step (ii) into the proper amount of de-ionized water, ultrasonically dispersing for 1-48 hours, adding nano metal particle-modified poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) composite material obtained in step (iii) into the suspension and homogenizing with ultrasonic for 1-48 hours to obtain a graphene poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) composite material modified by nano metal particles, where the weight ratio of the nano-metal particle-modified reduced graphene oxide nanosheet and the nano-metal particle-modified poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) composite material is 1:0.01-1:100.