The method of preparing a composite electrode material Trimanganese dimensional graphene / tetroxide based

The present invention discloses a method for preparing a three-dimensional graphene / manganomanganic oxide-based composite electrode material. The present invention first uses a chemical vapor deposition method involving graphene on a three-dimensional foam, a copper-nickel alloy green; and then removing the copper-nickel alloy, prepared by a three-dimensional graphene having a plurality of passage holes of the self-supporting; Finally, the three-dimensional graphene immersed in a permanganic acid a mixed solution of sodium nitrate and potassium, on the three-dimensional graphene growth manganese tetroxide, prepared to give a three-dimensional graphene / manganomanganic oxide composite electrode material. Dimensional graphene the preparation obtained / trimanganese tetraoxide composite electrode material is a multi-channel holes of the mesh structure, a multiple ion transport number of channels, with high surface area and high electrical conductivity. Composite electrodes may be used to prepare the super capacitor, the composite electrode can also be used to prepare other energy storage component.