【摘要】 烟草基活性炭（TAC）成功制备并用于超级电容器电极材料。由烟草出发,通过一步水热法,进而热解得到烟草基多孔碳（TPC）,比表面积为111.25 m²·g^-1,孔容为0.11 cm³·g^-1,平均孔直径1.77 nm,在0.5 A·g^-1电流下,比电容为37 F·g^-1。通过碱活化得到TAC,具有较高的比表面积1297.6 m²·g^-1,大的孔容0.52 cm³·g^-1,和平均孔直径0.52 nm。在0.5 A·g^-1电流下,比电容可达148 F·g^-1。两电极体系下具有120 F·g^-1的比电容值,在1 A·g^-1下经过9 000次循环后,容量没有损失。更多还原

【Abstract】 A tobacco-derived activated carbon（TAC） was prepared from tobacco waste using KOH activation with a KOH/tobacco carbon mass ratio of 3 at 800 ℃ for 1 h,and was used as an electrode material for a supercapacitor. The tobacco waste was hydrothermally treated in a 10%（ v/v） HCl solution to remove metallic impurities and carbonized before activation. The carbonized tobacco has a lowBrunauer-Emmett-Teller（ BET） surface area of 111. 25 m²·g^-1,a pore volume of 0. 11 cm3·g^-1,an average pore diameter of 1. 77 nm and a specific capacitance of 37 F·g^-1 at a current density of 0. 5 A·g^-1. The TAC has a high BET surface area of 1 297. 6 m²·g^-1,a large pore volume of 0. 52 cm³·g^-1,and a pore size distribution with a median pore size of 0. 52 nm. It has a specific capacitance of 148 F·g^-1 at a current density of 0. 5 A·g^-1 in a 6 M KOH electrolyte,and an excellent cycling stability with no capacitance fade after 9 000 cycles at a current density of 1 A·g^-1.更多还原