▎ 摘　　要

NOVELTY - Porous electrode material comprises a porous graphene, which has a three-dimensional fully connected network porous structure. USE - The porous electrode material is used for electrochemical removal of algae and wastewater organic pollutants, and for producing porous structure microelectrode (all claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for method for producing the porous electrode material, which involves (a) taking screened graphite as raw material, using modified Hummers method, preparing graphene oxide to obtain a certain concentration of graphene oxide suspension solution, adding potassium permanganate to the graphene oxide solution, immersing three-dimensional porous metal template of pore size in the mixed solution of the graphene oxide and potassium permanganate, performing certain voltage treatment at constant voltage for 10-30 seconds, where the voltage is 1.2-1.5 V, depositing graphene oxide on the surface of metal network and self-assembled into a staggered network, and drying and washing the product to obtain three-dimensional porous graphene having a structure consistent with the metal template by thermal reduction in a tube furnace at 900-1000 degrees C and an argon atmosphere for 1-1.5 hours, or (b) using three-dimensional porous metal as a template and a catalyst, methane as a carbon source, allowing graphene to grow on a three-dimensional porous metal surface through catalysis at 900-1100 degrees C, dropwise adding an ethyl lactate solution of polymethylmethacrylate (PMMA) to the graphene surface, baking at 160-200 degrees C for 10-50 minutes to obtain a graphene network, i.e. a metal/Gr/PMMA structure with a layer of PMMA film on the surface, after the solution with hot ferric chloride etching metal template, and then dissolving in hot acetone PMMA to obtain three-dimensional porous graphene network material.