▎ 摘　　要

NOVELTY - Preparing oxygen reduction catalyst of nickel-aluminium layered double hydroxide/graphene oxide combined with covalent organic framework comprises (i) ultrasonically dispersing graphene oxide into mixed solution of sodium hydroxide and sodium carbonate, adding the above dispersion liquid to a 100 ml flask of 0.075 M nickel(II) chloride hexahydrate and 0.025 M aluminium nitrate nonahydrate, vigorously stirring, and then adding sodium hydroxide to adjust the pH of the solution to 10.5, then heating the mixture in a water bath for 6 hours, then heating, and quickly adding 34 mg/ml (100 ml) sodium sulfide to the above solution, cooling, washing and drying, (ii) dissolving 36 mg terephthalaldehyde (0.27 mmol) and 60 mg tetrakis-(4-aminophenyl)methane (0.16 mmol) in 3 ml anhydrous 1,4-dioxane under vigorous stirring, adding aqueous acetic acid to above mixture, and (iii) adding NiAlLDH/GO synthesized in the step (i) into the COF-300 mother liquor, and uniformly stirring. USE - The method is useful for preparing oxygen reduction catalyst of nickel-aluminium layered double hydroxide/graphene oxide combined with covalent organic framework. ADVANTAGE - The method: produces product having high activity, high specific surface area, multiple reaction sites and electric durability; and improves the performance of the microbial fuel cell. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for oxygen reduction catalyst of nickel-aluminum layered double hydroxide/graphene oxide combined covalent organic framework prepared by above mentioned method.