▎ 摘　　要

NOVELTY - A sensor electrode comprises a support electrode, a polycation electrolyte and a graphene composite decoration membrane with respect to graphene composite decoration electrode. The graphene composite decoration membrane is graphene oxide-cage-shaped hexahedral silsesquioxane composite. USE - Sensor electrode is used for integrating 1-hydroxypyrene. ADVANTAGE - The sensor electrode is economical, and has excellent stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene oxide-cage-shaped hexahedral silsesquioxane composite membrane decoration electrode, which involves adding graphite oxide to water or alkali solution for dispersed ultrasonically, forming graphene oxide solution dispersed in a single-layer, preparing polycation electrolyte to water solution, preprocessing supporting electrode, immersing electrode to the polycation electrolyte, providing positive charge to the surface of supporting electrode and repeatedly and alternatively immersing processed supporting electrode with positive charge in graphene oxide solution and cage-shaped hexahedral silsesquioxane solution for 1-100 times.