Investigation of electrical conductivity based on porous hollow carbon black for EDLC

The crystallinity of carbon black nanoparticles is inhomogeneous, and therefore hollow type carbon black are prepared by selectively removing amorphous cores while maintaining aligned skins. Herein, we prepare hollow carbon nanoparticles composed of mesopores with good EDLC performance from commercial carbon black through an extremely mild oxidation method. Hollow type carbon black have improved specific surface area and an ion reservoir region can be formed due to their structural characteristics, making them suitable for EDLC electrodes. Carbon blacks, however, has different physical properties such as the specific surface and electrical conductivity. Exploiting these differences, we investigated the effect of surface area and electrical conductivity on EDLC performance.