Preparation and Supercapacitor Properties of Nitrogen and Fluorine Co-doped Porous Carbon
In this work,nitrogen and fluorine co-doped honeycomb-like porous carbon is prepared from cotton pulp by activation method without adding any Nitrogen/sulfur reagents.Nitrogen and fluorine co-doped honeycomb-like porous carbon has ultrahigh specific surface area,high micropores specific surface area,high pore volume,smaller average pore size and high N and F doped.In a two electrode system,nitrogen and sulfur co-doped porous carbon exhibits very high specific capacitance(199 F·g-1),high rate performance(retention of 44.8％),ultrahigh energy density of 84.6 Wh·kg-1 and excellent cycling stability(retention of 95.1％)in ionic liquid,showing high practical application in supercapacitors.
nitrogen and fluorine co-dopedcotton pulphoneycomb-like porous carbonsupercapacitorshigh energy density
万方数据
维普
