▎ 摘　　要

NOVELTY - Preparation of flexible reduced graphene and tellurium nanowire composite thermoelectric thin film involves coating reduced graphene dispersion on predetermined area of a flexible substrate, draining the dispersion, coating tellurium nanowire dispersion on the area covered by the reduced graphene, draining the dispersion, vacuum-drying the flexible substrate covered with the composite film at 30-60 degrees C, and annealing the composite film at 200 degrees C for predetermined time in argon/hydrogen mixed gas atmosphere including hydrogen content of 8%. USE - Preparation of flexible reduced graphene and tellurium nanowire composite thermoelectric thin film (claimed). ADVANTAGE - The method enables preparation of flexible reduced graphene and tellurium nanowire composite thermoelectric thin film with low energy consumption, by safe, simple and environmentally-friendly process. DETAILED DESCRIPTION - Preparation of flexible reduced graphene and tellurium nanowire composite thermoelectric thin film involves dispersing predetermined amount of graphene oxide and surfactant in water, adding acid in an amount of 2-4 times of the volume of dispersion, hydrothermally reacting at 120-150 degrees C for 2-6 hours, naturally cooling, filtering by suction filtration, washing obtained precipitate with deionized water until neutral, vacuum-drying at 60 degrees C for 3-5 hours, obtaining dispersible reduced graphene, dissolving sodium tellurite and complexing agent in water, adding 25% aqueous ammonia and 98% hydrazine hydrate, hydrothermally reacting at 180 degrees C for predetermined time, adding predetermined amount of acetone to the obtained solution, precipitating, centrifuging, removing supernatant, obtaining dispersible tellurium nanowire, formulating predetermined concentration of reduced graphene dispersion and tellurium nanowire dispersion, respectively, coating predetermined amount of reduced graphene dispersion on predetermined area of a flexible substrate in a vacuum suction aid, draining the dispersion, coating predetermined amount of tellurium nanowire dispersion on the area covered by the reduced graphene in vacuum suction aid, draining the dispersion, vacuum-drying the flexible substrate covered with the composite film at 30-60 degrees C, and annealing the composite film at 200 degrees C for predetermined time in argon/hydrogen mixed gas atmosphere including hydrogen content of 8%.