▎ 摘　　要

NOVELTY - Modification of perovskite using graphene involves improving Hummers method to prepare graphene oxide, adding 100 mg dried graphene oxide powder to 200 mL deionized water, ultrasonically processing for 1 hour, adding hydrazine hydrate at 80 degrees C, stirring for 2 hour until the solution turns black, repeating filtration, washing with anhydrous ethanol and deionized water, obtaining fluffy graphene powder after vacuum drying for 12 hours, and preparing perovskite oxide comprising lanthanum-strontium-cobalt oxide by sol-gel method by uniformly mixing 10-25 %mass graphene and 90-75 %mass perovskite-type oxide to obtain graphene-modified perovskite comprising lanthanum-strontium-cobalt oxide catalyst. USE - Modification of perovskite using graphene. DETAILED DESCRIPTION - Modification of perovskite using graphene involves improving Hummers method to prepare graphene oxide, adding 100 mg dried graphene oxide powder to 200 mL deionized water, ultrasonically processing for 1 hour, adding hydrazine hydrate at 80 degrees C, stirring for 2 hour until the solution turns black, repeating filtration, washing with anhydrous ethanol and deionized water, obtaining fluffy graphene powder after vacuum drying for 12 hours, and preparing perovskite oxide of formula: La0.6Sr0.4CoO3 (I) by sol-gel method by uniformly mixing 10-25 %mass graphene and 90-75 %mass perovskite-type oxide to obtain graphene-modified perovskite catalyst.