▎ 摘　　要

NOVELTY - The utility model claims a composite material modified electrode of the lead ion detection in animal drinking water, comprising graphene modified glassy carbon electrode and modified glassy carbon electrode surface of the graphene nano-cobalt oxide by electrochemical deposition in situ load layer. This utility model makes the graphene glassy carbon electrode as the loaded heteropoly compound of carbon material substrate, the nano-cobalt particles by electrochemical deposition method original position loaded on the reduced graphene layer with an oxygen containing functional group of divalent cobalt ion bonding effect with reduced graphene surface, nano-particles act as nucleation sites of the metal cobalt ion, the structure is helpful for blocking nano-cobalt agglomeration, so as to improve the conductivity and flexibility of the composite material modifying electrode. composite material of the utility model through the modified electrode is suitable for livestock drinking water lead ions in real-time detection.