Ex) Article Title, Author, Keywords
New Physics: Sae Mulli 2015; 65: 287-290
Published online March 31, 2015 https://doi.org/10.3938/NPSM.65.287
Copyright © New Physics: Sae Mulli.
Ho Jun KIM, Hae Kyung JEONG*
Department of Physics, Institute of Basic Science, Daegu University, Gyeongsan 712-714, Korea
This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
We have synthesized nitrogen-doped activated carbon by using a gelatin that is used in various foods, and we have used impedance spectroscopy to investigate its electrochemical properties. Three kinds of samples, precursor activated carbon (MSP20), nitrogen-doped activated carbon (N-MSP20), and nitrogen-doped activated carbon with heat treatment (HM-MSP20), are investigated, and the impedances of MSP20 and HM-MPS20 were similarly the lowest. The cyclic voltammetric current of HM-MSP20, however, was dominant compared to that of MSP20, implying that nitrogen doping had a positive effect on the capacitance. Therefore, nitrogen doping of activated carbon plays a positive and effective role in energy-storage devices.
Keywords: Graphene, Active carbon, Nitrogen doping