کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
182846 | 459526 | 2016 | 8 صفحه PDF | دانلود رایگان |
• Nitrogen-doped graphene were prepared through electrochemical exfoliation.
• The nitrogen-doped graphene demonstrates high N-doping levels of 6.05 atom%.
• This nitrogen-doped graphene show enhanced supercapacitor behaviors.
Electrochemically anodic exfoliation of graphite has been developed for nitrogen-doped few-layer graphene sheets (N-FLGS), demonstrating high N-doping levels of 6.05 atom%. The process for the preparation of N-FLGS is involved with the intercalation of glycine anions H2NCH2COO− into the graphite layers, electro-polymerization of large electro-oxidation products H2NCH2CONHCH2−, and in situ N-doping in the graphite layer. Transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and Raman spectroscopy were employed to characterize the structure and properties of the N-FLGS. The as-fabricated N-FLGS utilized as electrode materials for supercapacitor exhibit enhanced electrochemical performance, including excellent cycling stability (the capacitance ratios after 10 000 cycles is 96.1%) and a remarkable rate capability (184.5 F g−1 at 1 A g−1, 132.7 F g−1 at 50 A g−1).
Nitrogen-doped few-layer graphene sheets prepared through electrochemical exfoliation show excellent cycling stability and remarkable rate capability when utilized in supercapacitor.Figure optionsDownload as PowerPoint slide
Journal: Electrochimica Acta - Volume 204, 20 June 2016, Pages 100–107