▎ 摘　　要

NOVELTY - A nitrogen-doped graphene supported cobalt oxide reduction reaction catalyst hydro-thermal synthesis method involves mixing graphene oxide with urea, heating the mixture, crushing graphene oxide and adding deionized water, followed by dispersing the mixture, adding cobalt salt into a hydrothermal reaction kettle, stirring and dispersing, sealing the reaction kettle, subjecting to hydro-thermal reaction, adding hydrazine hydrate and ammonia water to adjust the pH, subjecting to hydrothermal reduction reaction, cooling the solution, and washing and drying to obtain the finished product. USE - Method for hydro-thermal synthesis of nitrogen-doped graphene supported cobalt oxide reduction reaction catalyst that is utilized as electro-catalyst for oxygen reduction. DETAILED DESCRIPTION - A nitrogen-doped graphene supported cobalt oxide reduction reaction catalyst hydro-thermal synthesis method involves mixing graphene oxide with urea, heating the mixture in an oven for heat treatment, crushing graphene oxide to 100 meshes and adding deionized water, followed by dispersing the mixture ultrasonically for 0.5 hours, adding cobalt salt into a hydrothermal reaction kettle, stirring and dispersing it uniformly, sealing the reaction kettle at 140-200 degrees C, subjecting to hydro-thermal reaction for 4-24 hours, adding hydrazine hydrate and ammonia water to adjust the pH value of solution to be 10, sealing the reaction kettle, subjecting to hydrothermal reduction reaction at 110-180 degrees C for 4-24 hours, cooling the solution by decompressing and filtering, washing with de-ionized water and absolute ethyl alcohol, and drying to obtain the finished product.