Dependence of Double Layer Capacitance on Pore Diameter of Carbon Coated Porous Si

Abstract

Carbon coated porous silicon with various pore sizes as a model of porous electrode was prepared for Electric double layered capacitors (EDLCs). Each carbon coated PSi has a diameter ranged from 7 to 72 nm. The specific capacitance was influenced the diameter of main chain observed surface SEM images. The calculated capacity of each electrode depends on the pore distribution which showed the overlapping the electronic double layer.