▎ 摘　　要

NOVELTY - A catalyst is prepared by (1) using polypyrrole to prepare polypyrrole dispersion, (2) preparing reduced graphene dispersion, (3) preparing cucurbituril macrocyclic compound dispersion, (4) polishing the glassy carbon electrode with aluminum oxide polishing powder, cleaning and drying, and coating the polypyrrole dispersion, the reduced graphene dispersion and the cucurbituril macrocyclic compound dispersion on the glassy carbon electrode in sequence. USE - Catalyst used as electrode catalyst in electrocatalytic oxygen evolution reactions (claimed). ADVANTAGE - The catalyst has low overpotential, and excellent stability, and suitable for large-scale industrial production. The catalyst is environmentally-friendly and economically prepared by a simple process which consumes less time and do not need complex equipment. DETAILED DESCRIPTION - A catalyst is prepared by (1) using polypyrrole to prepare polypyrrole dispersion, (2) preparing reduced graphene dispersion, (3) preparing cucurbituril macrocyclic compound dispersion, (4) polishing the glassy carbon electrode with aluminum oxide polishing powder, cleaning and drying, and coating the polypyrrole dispersion, the reduced graphene dispersion and the cucurbituril macrocyclic compound dispersion on the glassy carbon electrode in sequence. The cucurbituril macrocyclic compound is of formula (A). An INDEPENDENT CLAIM is included for use of the catalyst as electrode catalyst in electrocatalytic oxygen evolution reactions.