▎ 摘　　要

NOVELTY - Preparing double metal organic framework (MOF) derived nickel ferrite/nickel cobaltate/graphene oxide composite material involves adding ferric chloride, copper nitrate and terephthalic acid to N,N-dimethylformamide under stirring conditions, stirring, adding sodium hydroxide solution, and continuously stirring to obtain a mixed solution. The mixed solution is transferred to a polytetrafluoroethylene autoclave for hydrothermal reaction, and naturally cooled to room temperature to obtain reaction product I. N,N-dimethylformamide is used to clean the reaction product I, and absolute ethanol is used to clean the reaction product I. The cleaned reaction product I is dried to obtain FeNi-MIL-88. Cobalt nitrate, nickel nitrate, 2,5-dihydroxyterephthalic acid and FeNi-MIL-88 are added to the N,N-dimethylformamide/deionized water mixed solution in sequence, and stirred to obtain a mixture I. The mixture I is transferred to a polytetrafluoroethylene autoclave for hydrothermal reaction. USE - Method for preparing double MOF derived nickel ferrite/nickel cobaltate/graphene oxide composite material used as a supercapacitor electrode material (claimed). ADVANTAGE - The method enables preparation of bimetallic metal-organic framework-derived nickel ferrite/cobaltate nickel/graphene oxide composite material with high conductivity. DETAILED DESCRIPTION - Preparing double metal organic framework (MOF) derived nickel ferrite/nickel cobaltate/graphene oxide composite material involves adding ferric chloride, copper nitrate and terephthalic acid to N,N-dimethylformamide under stirring conditions, stirring, adding sodium hydroxide solution, and continuously stirring to obtain a mixed solution. The mixed solution is transferred to a polytetrafluoroethylene autoclave for hydrothermal reaction, and naturally cooled to room temperature to obtain reaction product I. N,N-dimethylformamide is used to clean the reaction product I, and absolute ethanol is used to clean the reaction product I. The cleaned reaction product I is dried to obtain FeNi-MIL-88. Cobalt nitrate, nickel nitrate, 2,5-dihydroxyterephthalic acid and FeNi-MIL-88 are added to the N,N-dimethylformamide/deionized water mixed solution in sequence, and stirred to obtain a mixture I. The mixture I is transferred to a polytetrafluoroethylene autoclave for hydrothermal reaction, and naturally cooled to room temperature to obtain the reaction product II. N,N-dimethylformamide is used to clean the reaction product II. An absolute ethanol is used to clean the reaction product II, and the cleaned reaction product II is dried to obtain FeNi-MIL-88/NiCo-MOF-74. Annealing of FeNi-MIL-88/NiCo-MOF-74 is used in a nitrogen atmosphere to obtain Nickel Ferrite (NiFe2O4)/Nickel cobaltite (NiCo2O4). Graphene oxide, NiFe2O4/NiCo2O4 and deionized water are mixed uniformly, and ultrasonically treated to obtain mixture II. The mixture II is added to a polytetrafluoroethylene autoclave for hydrothermal reaction, and then naturally cooled to room temperature to obtain the reaction product III. Deionized water is used to filter and wash the reaction product III, and dried to obtain the desired product.