POROUS GRAPHENE MATERIAL AND PREPARATION METHOD AND USES AS ELECTRODE MATERIAL THEREOF

A porous graphene material and preparation method thereof are provided. The pore diameter of the porous graphene material is 1 nm-10 µm and its specific surface area is 100m/g-2000m/g. The method for preparing the porous graphene material comprises the following steps: mixing graphene or graphene oxide with pore-forming agent, and pressing to obtain bulk or powder particle composite; heating the composite, and releasing gases from the pore-forming agent to obtain the porous graphene material. The porous graphene material can be used as electrode materials of supercapacitor and lithium ion battery.