Preparation, Characterization And Electrochemical Properties Of Carbon-based Three-dimensional Ordered Macroporous Materials

The heteroatoms and titanium doped three-dimensional ordered macroporous carbon(3DOMC) with a wide range of applications in the field of supercapacitor electrode materialsbecause of their unique electrochemical properties. Therefore, the synthesis of this class ofmacroporous materials increasing by more scholars and researchers of concern. This thesis isbased on colloidal crystal template theory, polystyrene microspheres as a template, andmodified resol as precursor liquid,successfully synthesize three-dimensional orderedmacroporous carbon doped with phosphorus (P-3DOMC) materials and titaniumthe dopedordered macroporous carbon (Ti-3DOMC) material.Both two materials are used polystyrene microspheres as the template, because thedifferent of dopant atoms, the precursor solution to be taken a different approach tomodification.In order to achieve the purpose of the introduction of phosphorus atoms, thesynthesis of P-3DOMC is to add phosphate in the precursor solution in the process,while, theTi-3DOMC be prepared previously prepared titanium gum with the resole resin mixedtogether as the template after the precursor solution. Thus obtained3DOMC tested by N2adsorption, scanning electron microscopy, Raman spectroscopy and X-ray diffraction.Theresults show that P/Ti-3DOMCs have a hierarchical pore structure with a uniform macroporesize of250-400nm, a large Brunauer-Emmett-Teller (BET) surface area (1083-1212m2g-1)and a large pore volume (1.07-1.15cm3g-1). With increasing weight content of phosphorus incarbon source, both BET surface area and pore volume increase. By cyclic voltammetry,constant current charge and discharge testing, the resulting material as electrode performanceswere evaluated, the results show that P-3DOMC materials because of the nature of thesurface chemistry and physical properties change, and therefore have more excellentcapacitance performanceGood for the area of an electrode material applied to thesupercapacitors; while materials Ti-3DOMC, the material as an electrode material of thelithium-ion battery electrochemical tests, indicating that the material has excellentelectrochemical performance.