▎ 摘　　要

NOVELTY - A porous graphene electrode material preparing method involves preparing a graphene oxide solution. The graphene oxide solution is added with sodium dodecyl benzene sulfonate and sulfuric acid to obtain mixed solution. The mixed solution is taken as electrolyte, connected with electrochemical device, followed by taking three-electrode system, enabling electrode surface to generate air bubbles, depositing graphene oxide on conductive substrate template, placing the graphene porous electrode in distilled water, removing impurities and freeze-drying to obtain the finished product. USE - Method for preparing porous graphene electrode material for use as electrode material in super capacitor (claimed). ADVANTAGE - The method enables preparing porous graphene electrode material with good conductivity and large specific surface area. DETAILED DESCRIPTION - A porous graphene electrode material preparing method involves preparing a graphene oxide solution by adopting hummers method, pickling, washing, placing in dialysis bag until reaching a neutral to give graphene oxide solution. The graphene oxide solution is added with sodium dodecyl benzene sulfonate and concentrated sulfuric acid, stirred uniformly and mixed to obtain mixed solution. The mixed solution is taken as electrolyte, connected with electrochemical device under potentiostatic electrochemical techniques, followed by taking three-electrode system such as conductive substrate as working electrode, platinum foil electrode as an electrode and saturated calomel electrode as reference electrode, enabling electrode surface to generate air bubbles, depositing graphene oxide on conductive substrate template to obtain a graphene porous electrode, placing the graphene porous electrode in distilled water, removing impurities and freeze-drying to obtain the finished product.