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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 °C 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 low Brunauer-Emmett-Teller...
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