▎ 摘　　要

NOVELTY - Graphene nanoribbons are dispersed in organic solvent and ultrasonically dispersed to obtain graphene oxide nanoribbons-stable dispersion. Selenium powder is dissolved in hydrazine hydrate, heated, uniformly dispersed and sodium molybdate is dissolved, and ultrasonically dispersed. Alkylene oxide-containing nano-graphite is added to resultant material, and sodium molybdate and selenium powder mixture is added. Resultant material is subjected to solvothermal reaction, washed, processed and dried to obtain molybdenum selenide/graphene nanoribbons composite material. USE - Preparation of molybdenum selenide/graphene nanoribbons composite material used as high-performance evolution catalyst material and electrode material for lithium ion battery and solar energy battery (claimed). ADVANTAGE - The method efficiently provides molybdenum selenide/graphene nanoribbons composite material having high specific surface area and conductivity. DETAILED DESCRIPTION - Carbon nanotubes are dispersed in 95-98% concentrated sulfuric acid, and 85% phosphoric acid is added and continuously stirred to obtain homogeneous dispersion. Potassium permanganate is added to obtained dispersion, stirred constantly, heated at 60-80 degrees C, and the temperature is stabilized and maintained for 2-3 hours, and stirred constantly. The resultant solution is cooled to room temperature, and hydrogen peroxide is added and maintained overnight. The resultant precipitate is washed using aqueous hydrochloric acid, and further washed using ethanol/ether mixed solution. The obtained solution is centrifuged and dried to obtain solid oxide graphene nanoribbons. The obtained nanoribbons are dispersed in an organic solvent, and ultrasonically dispersed to obtain graphene oxide nanoribbons-stable dispersion. Selenium powder is dissolved in hydrazine hydrate, heated, uniformly dispersed and sodium molybdate is dissolved, and ultrasonically dispersed. Alkylene oxide-containing nano-graphite is added to the resultant material, and sodium molybdate and selenium powder mixture is added. The resultant material is subjected to solvothermal reaction at preset temperature, to obtain molybdenum selenide/graphene nanoribbons composite. The obtained composite is repeatedly washed using deionized water and ethanol, processed and dried to obtain molybdenum selenide/graphene nanoribbons composite material.