Fig. 1From: Enhanced Capacitive Performance of N-Doped Activated Carbon from Petroleum Coke by Combining Ammoxidation with KOH Activation a Nitrogen adsorption/desorption isotherms measured at 77 K and b pore size distributions of NOAC at different temperatures. c Low-pressure CO2 physisorption isotherms measured at 273 K for the carbons and d NLDFT CO2 micropore size distributionsBack to article page