▎ 摘　　要

NOVELTY - Quadrupole conductivity electrode, comprises an electrode material and a graphene layer compounded on the electrode material. USE - Quadrupole conductivity electrode for use in field of seawater measurement (claimed). ADVANTAGE - The electrode expands the microscopic area of the conductive electrode by smearing the nano-level conductive material graphene on the surface of the quadrupole electrode of the existing sensor, thus expanding the contact area between the conductive electrode and seawater, and reducing polarization and reducing adhesion to the electrode surface, is more suitable for promotion and application in the industry, and can be prepared with mild conditions, and strong controllability in simple, and easy manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing a quadrupole conductivity electrode, which involves removing the protective material or protective device of the quadrupole conductivity electrode for seawater measurement to obtain the electrode material of the quadrupole conductivity electrode, dispersing the graphene in water to obtain an aqueous graphene slurry, compositing graphene slurry on the surface of the electrode material, and drying to obtain a quadrupole conductivity electrode.