期刊
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
卷 20, 期 8, 页码 4854-4859出版社
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2020.18496
关键词
Nitrogen-Enriched Carbon; Reduced Graphene Oxide; Electrode Materials; Supercapacitor
类别
资金
- National Natural Science Foundation of China [51702371]
- Natural Science Foundation of Hunan Province [20191150654]
- Scientific Research Foundation of Hunan Provincial Education Department [18C0207]
Nitrogen-enriched reduced graphene oxide electrode material can be successfully prepared through a simple hydrothermal method. The morphology and microstructure of ready to use electrode material is measured by field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD). Physical characterizations revealed that nitrogen-enriched reduced graphene oxide electrode material possessed high specific surface area of 429.6 m(2) g(-1), resulting in high utilization of electrode materials with electrolyte. Electrochemical performance of nitrogen-enriched reduced graphene oxide electrode was also investigated by cyclic voltammetry (CV), galvanostatic charge/discharge measurements and electrochemical impedance spectroscopy (EIS) in aqueous in 6 M KOH with a three-electrode system, which displayed a high specific capacitance about 223.5 F g(-1) at 1 mV s(-1). More importantly, nitrogen enriched reduced graphene oxide electrode exhibited outstanding stability with 100% coulombic efficiency and with no specific capacitance loss under 2 A g(-1) after 10000 cycles. The super capacitive behaviors indicated that nitrogen-enriched reduced graphene oxide can be a used as a promising electrode for high-performance super-capacitors.
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