Preparation And Properties Of Ionic Liquid/Graphene Three-Dimensional Colloid And Sulfonated GO/PANI Composite Membrane

Graphene has been well obtained by the majority of researchers,due to it has the characteristics of the excellent electrical conductivity,thermal conductivity,and mechanical properties since the graphene is reported.Graphene is a single layer graphene sheet prepared by tape stripping method,which is only one of an ideal two-dimensional nanomaterial since it is discovered.Graphene has been almost perfect material,but in order to expand its application in more areas of energy,environment,and other practical applications,graphene needs to be assembled into three-dimensional graphene structure.In addition to the three-dimensional structure of graphene itself has some properties,and also has other unique features.Three-dimensional graphene is made up of carbon atoms,which has excellent electrical conductivity,large specific surface area,and porous structure.The unique three-dimensional structure of graphene with porous,flexible,layer pressure,mass transfer properties.Owing to the good stability and large specific surface area,the wettability of the electrolyte and the electrochemical performance of the electrode can be improved.Three-dimensional graphene and its composites have superior properties and wider application in the fields of energy,environmental protection,catalysis and so on.Based on this,the following innovative work has been done:(1)An Ionic liquid as a crosslinking agent between the graphene layers,using ionic bond and carboxyl and the epoxy reaction of graphene layers to form 3D graphene structure.The density of the three-dimensional graphene is very light and high mechanical strength,and higher cyclic compression performance,especially in the oil absorption ability.(2)By using a conductive polymer polyaniline and graphene composite,can enhance the overall electrochemical properties of graphene composites,expand three-dimensional graphene in the energy storage capacity,cycle stability and high growth,we polyaniline in three-dimensional graphene,the preparation of three-dimensional graphene-polyaniline composites,due to high specific capacitance and pseudo the capacitance characteristics of polyaniline,improve the specific capacitance of graphene,in order to verify the polyaniline in the composite materials play a role,we use the high-temperature decomposition of polyaniline,decomposition product of further analysis,we found that the electrochemical performance of the composite returned to near before,this suggests that Graphene/PANI can be used as electrode material super capacitor.(3)A method of low cost and rapid is adopted to prepare for the flexible graphene-polyaniline composite film and the graphene oxide sulfonated,sulfonic acid groups are introduced into the graphene layers,sulfonic acid groups can well enhance hydrophilicity of graphene,which can make the graphene dispersed into the aqueous solution then,after vacuum filtration method to prepare graphene films,keeping membrane humidity,on the membrane in situ polyanilines,polyaniline graphene film.By controlling the different reaction conditions,the graphene film is obtained with different polyaniline content.