AUTHOR=Jing Mingjun , Wu Tianjing , Zhou Yazheng , Li Xilong , Liu Yong 

TITLE=Nitrogen-Doped Graphene via In-situ Alternating Voltage Electrochemical Exfoliation for Supercapacitor Application

JOURNAL=Frontiers in Chemistry

VOLUME=Volume 8 - 2020

YEAR=2020

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2020.00428

DOI=10.3389/fchem.2020.00428

ISSN=2296-2646

ABSTRACT=Doping heteroatom is one of effective ways to enhance the electrochemical performances of graphene, which has been received widely attention, especially nitrogen. Alternating voltage electrochemical exfoliation, as a low cost and green electrochemical approach, has been applied to in-stiu obtain N-doped graphene (N-Gh) material. The N-Gh presents much higher capacity than that of pure graphene prepared via the same method, which might be attributed to the introduction of nitrogen, few of effects and disorder structure. As-prepared N-Gh exhibits low O/C radio that is helpful to maintain high electrical conductivity. And the effects and disorder structure are also conductive to reduce the overlaps of graphene layers. Symmetric supercapacitor assembled with N-Gh electrodes displays satisfactory rate behavior and long cycling stability (92.3% retention after 5000 cycles).