PREPARATION OF POROUS CARBON WITH NANOTUBE-LIKE PORE STRUCTURE AND THEIR ELECTROCHEMICAL PROPERTIES FOR SUPERCAPACITOR

摘要

Due to their stable physicochemical properties, high surface area, relatively low cost, and availability, porous carbons are regarded as the most promising supercapacitors electrode materials. In particular, mesoporous carbon obtained by template method generally exhibited very good electrochemical performance in this application. Efficient method to obtain mesoporous carbons is using various silica-templates. It is difficult to remove the silica in those processes, although the pores with ordered structure and a specific size are easily obtained in carbons. In contrast, a method to prepare porous carbons using metal oxides as template developed by M.Inagaki et al seemed to be more attractive. In this work, porous carbons were prepared by carbonizing the soluble starch by using needle-like nano-sized MgO as template. The relationships between the structure and the electrochemical performance for supercapacitors were investigated.