▎ 摘　　要

NOVELTY - An iron cobalt nickel borate/polypyrrole/reduced graphene oxide nanomaterial is prepared by polymerizing pyrrole on graphene oxide nanosheets under ultrasonic irradiation to obtain polypyrrole/graphene oxide nanosheets, dispersing in water, adding cobalt chloride hexahydrate, ferric chloride hexahydrate, nickel chloride hexahydrate and sodium borohydride, mixing, reacting in ice water bath, washing with distilled water and ethanol, centrifuging and vacuum drying. USE - Iron cobalt nickel borate/polypyrrole/reduced graphene oxide nanomaterial used in oxygen evolution reaction electrocatalytic modified electrode used in electrocatalytic decomposition of water (all claimed). ADVANTAGE - With iron cobalt nickel borate as the catalytic center, polypyrrole/reduced graphene oxide nanosheets can promote the electron transport of oxygen evolution reaction as a substrate material, thereby increasing the reaction rate of water decomposition, and exhibiting lower over potential, so that the nanomaterial-modified electrode exhibits high electrochemical activity and excellent stability in water decomposition. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) oxygen evolution reaction electrocatalytic modified electrode which comprises iron cobalt nickel borate/polypyrrole/reduced graphene oxide nanomaterial attached to iron cobalt nickel borate/polypyrrole/reduced graphene oxide modified glassy carbon electrode; (2) preparation of oxygen evolution reaction electrocatalytic modified electrode which involves ultrasonically dispersing iron cobalt nickel borate/polypyrrole/reduced graphene oxide nanomaterial in absolute ethanol to obtain uniformly dispersed composite modifier, applying uniformly dispersed composite modifier onto surface of clean glassy carbon electrode and drying at room temperature; and (3) method of using oxygen evolution reaction electrocatalytic modified electrode which involves constituting oxygen evolution reaction electrocatalytic modified electrode as working electrode, mercury/mercury oxide electrode as reference electrode and platinum electrode as additional electrode into three-electrode system and electro catalyzing water in 1 M potassium hydroxide aqueous solution.