▎ 摘　　要

The effects of N doping concentration and dopant moieties on the electrochemical properties of nanoporous graphene and their dependence on annealing temperature are investigated. Four types of N moieties - amide, amine, graphitic-N, and oxidized-N - are obtained, which transformed into pyridinic-N and pyrrolic-N upon annealing. The diffusion coefficient (0') of the ions in the electrode is the maximum at 400 degrees C because of a high level of N doping, whereas the second highest D' value is obtained at 700 degrees C owing to a high level of reduction and N doping. The highest specific capacitance is obtained for the sample annealed at 400 degrees C. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.