Influence of graphene microstructures on electrochemical performance for supercapacitors
2015; Elsevier BV; Volume: 25; Issue: 5 Linguagem: Inglês
10.1016/j.pnsc.2015.10.004
ISSN1745-5391
AutoresYouning Gong, Delong Li, Qiang Fu, Chunxu Pan,
Tópico(s)Graphene research and applications
ResumoThe influence of variant graphenes on electrochemical performance for supercapacitors was studied comparatively and systematically by using SEM, FTIR and Raman spectroscopy, cyclic voltammetry (CV), galvanostatic charge/discharge and electrochemical impedance spectroscopy (EIS). The results revealed that: 1) the nitrogen-doped graphene (N-G) electrode exhibited the highest specific capacitance at the same voltage scan rate; 2) the specific capacitance of the N-G reached up to 243.5 F/g at 1 A/g, while regular graphite oxide (GO) was 43.5 F/g and reduced graphene oxide (rGO) was 67.9 F/g; 3) N-G exhibited the best supercapacitance performance and the superior electrochemical properties, which made it an ideal electrode material for supercapacitors.
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