▎ 摘　　要

NOVELTY - Preparing functionalized graphene oxygen reduction reaction (ORR) catalyst involves synthesizing of sulfurized graphene under inert atmosphere. The graphene oxide and Lawson reagent are dissolved in organic solvent, heated and stirred, then cooled, removed the organic solvent and lawson reagent, and dried to obtain sulfurized graphene. The graphene sulfide is dissolved in the first solvent and ultrasonic treatment is performed. The inorganic base is added and stirred to react. The alkyl halide is added after reaction to heat the reaction, cooled after the reaction. The first solvent is removed, washed, centrifuged, and dried to obtain alkyl-branched modified graphene sulfide. USE - Method for preparing functionalized graphene oxygen reduction reaction (ORR) catalyst is used in cathode oxygen reduction reaction in metal-air batteries and dye batteries (claimed). ADVANTAGE - The method has simple preparation method, low preparation cost, good repeatability, conductivity, high initial potential, important theoretical and practical significance for developing new electrochemical catalyst and energy conversion and storage device, reduces the over-potential of oxygen reduction, catalytic performance can be compared with commercial platinum/carbon. DETAILED DESCRIPTION - Preparing functionalized graphene oxygen reduction reaction (ORR) catalyst involves synthesizing of sulfurized graphene under inert atmosphere. The graphene oxide and Lawson reagent are dissolved in organic solvent, heated and stirred, then cooled, removed the organic solvent and lawson reagent, and dried to obtain sulfurized graphene. The graphene sulfide is dissolved in the first solvent and ultrasonic treatment is performed. The inorganic base is added and stirred to react. The alkyl halide is added after reaction to heat the reaction, cooled after the reaction. The first solvent is removed, washed, centrifuged, and dried to obtain alkyl-branched modified graphene sulfide. The porphyrin compound and metal salt are dissolved in the second solvent and heated to reflux for reaction, cooled down, removed the second solvent, then washed, centrifuged, and dried to obtain metalloporphyrin. The alkyl-branched modified graphene sulfide and metalloporphyrin are dispersed in third solvent. The lye is added and heated to reflux to react, cooled after the reaction. The third solvent is removed, then washed, centrifuged, and dried to obtain pre-product in inert atmosphere. The obtained pre-product is heated and calcined, and then cooled to obtain functionalized graphene ORR catalyst.