화학공학소재연구정보센터
Journal of Applied Electrochemistry, Vol.46, No.6, 703-712, 2016
Simple synthesis of porous carbon materials for high-performance supercapacitors
Porous carbon materials have been prepared by direct carbonization of potassium stearate in inert atmosphere without any further activation. The porous carbon materials exhibited a typical hierarchical pore size distribution, thereby rendering them the excellent supercapacitive performance. All electrochemical measurements were performed in a three-electrode system using 6 M KOH as the electrolyte. CK800 can deliver a high specific capacitance of 208 F g(-1) (36.1 A mu F cm(-2)) at a current density of 0.5 A g(-1). As the current density increased up to 30 A g(-1), a high specific capacitance of 120 F g(-1)(20.8 A mu F cm(-2)) still can be maintained. 90.86 % of the specific capacitance was retained even after 5000 charge/discharge cycles at a current density of 2 A g(-1).