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Cited by 163Supercapacitor Materials and FabricationElectrocatalysts for Energy ConversionGraphene research and applications

The DOI matches its Crossref record; 36 of the 36 references it cites were found in a registry or an index.

Development of High-Performance Supercapacitor based on a Novel Controllable Green Synthesis for 3D Nitrogen Doped Graphene

Open access
Elessawy, Noha A., El Nady, J., Wazeer, W., Kashyout, A. B.·2019·Scientific Reports
DOI 10.1038/s41598-018-37369-xPMC PMC6362120
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Abstract

3D sponge nitrogen doped graphene (NG) was prepared economically from waste polyethylene-terephthalate (PET) bottles mixed with urea at different temperatures using green approach via a novel one-step method. The effect of temperature and the amount of urea on the formation of NG was investigated. Cyclic voltammetry and impedance spectroscopy measurements, revealed that nitrogen fixation, which affects the structure and morphology of prepared materials improve the charge propagation and ion diffusion. The prepared materials show outstanding performance as a supercapacitor electrode material, with the specific capacitance going up to 405 F g −1 at 1 A g −1 . An energy density of 68.1 W h kg −1 and a high maximum power density of 558.5 W kg −1 in 6 M KOH electrolytes were recorded for the optimum sample. The NG samples showed an appropriate cyclic stability with capacitance retention of 87.7% after 5000 cycles at 4 A g −1 with high charge/discharge duration. Thus, the prepared NG herein is considered to be promising, cheap material used in energy storage applications and the method used is cost-effective and environmentally friendly method for mass production of NG in addition to opening up opportunities to process waste materials for a wide range of applications.

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Crossref · 10.1038/s41598-018-37369-x

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Figures

Figure 1 Materials characterization. (a) FTIR, (b) XPS spectra survey (inset) high resolution N1s XPS spectra of 4NG sample, (c) Schematic suggested structure of NG based on the result of XPS analysis, (d) atomic % of nitrogen in every NG sample and their components, (e) Nitrogen adsorption-desorption isotherms of nitrogen doped graphene samples and and (f) Raman spectra.
Figure 1 Materials characterization. (a) FTIR, (b) XPS spectra survey (inset) high resolution N1s XPS spectra of 4NG sample, (c) Schematic suggested structure of NG based on the result of XPS analysis, (d) atomic % of nitrogen in every NG sample and their components, (e) Nitrogen adsorption-desorption isotherms of nitrogen doped graphene samples and and (f) Raman spectra.CC BY · PubMed Central
Figure 2 (a) TEM image and (b) HR-TEM image of sample 6 G, (c) corresponding TEM image with inset SEM image and (d) selected area diffraction pattern (SAED) of sample 4NG.
Figure 2 (a) TEM image and (b) HR-TEM image of sample 6 G, (c) corresponding TEM image with inset SEM image and (d) selected area diffraction pattern (SAED) of sample 4NG.CC BY · PubMed Central
Figure 3 Electrochemical performance of the prepared samples. (a) CV curves at 100 mV s−1 in 6 M KOH and (b) CV curve for 4NG at different scan rates (inset shows the current densities are linearly grown with increasing scan rate), (c) Galvanostatic charge discharge curves at 1 A g−1 in 6 M KOH and (d) for 4NG at different scan rates(inset shows the effect of increasing the current density on the specific capacitance).
Figure 3 Electrochemical performance of the prepared samples. (a) CV curves at 100 mV s−1 in 6 M KOH and (b) CV curve for 4NG at different scan rates (inset shows the current densities are linearly grown with increasing scan rate), (c) Galvanostatic charge discharge curves at 1 A g−1 in 6 M KOH and (d) for 4NG at different scan rates(inset shows the effect of increasing the current density on the specific capacitance).CC BY · PubMed Central
Figure 4 (a) Nyquist curves for all prepared samples as electrodes in 6 M KOH, (b) Nyquist curve of 4NG sample (inset shows its equivalent circuit), (c) Bode plots of all prepared samples supercapacitor devises, (d) The cycling stability of sample 4NG supercapacitor and sample 6 G, during 5000 charge/discharge cycles, measured at a current density 4 A g−1 within the potential range from 0 to 1.1 V, with the first 10 charge/discharge cycles for sample 4NG, (e) Photograph and (f) Schematic illustration of a stacking three-unit cell used to power a red LED.
Figure 4 (a) Nyquist curves for all prepared samples as electrodes in 6 M KOH, (b) Nyquist curve of 4NG sample (inset shows its equivalent circuit), (c) Bode plots of all prepared samples supercapacitor devises, (d) The cycling stability of sample 4NG supercapacitor and sample 6 G, during 5000 charge/discharge cycles, measured at a current density 4 A g−1 within the potential range from 0 to 1.1 V, with the first 10 charge/discharge cycles for sample 4NG, (e) Photograph and (f) Schematic illustration of a stacking three-unit cell used to power a red LED.CC BY · PubMed Central

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Citations

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Research works printed but not linked: 1

  1. Lin, X. Q. et al. Nitrogen-doped graphene/carbon nanohorns composite as ahigh-performance supercapacitor electrode Mater. Sci. Technol 33, 1339 (2017).

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Metadata

Authors
Elessawy, N. A., El Nady, J., Wazeer, W., & Kashyout, A. B.
Affiliations
City of Scientific Research and Technological Applications (EG)
Corresponding author
Elessawy, Noha A.
ORCID
Venue
Scientific Reports
Publisher
Springer Science and Business Media LLC
Published
2019-02-04
Volume
9
Issue
1
Pages
1129-1129
ISSN
2045-2322 (ISSN-L)
DOI
10.1038/s41598-018-37369-x
PMC
PMC6362120
OpenAlex
W2912441635
Cited by
163
References
36
Citations by year
2026: 18 · 2025: 24 · 2024: 18 · 2023: 28 · 2022: 34 · 2021: 13 · 2020: 22 · 2019: 6
FWCI
5.81
Type
journal article
Language
en
Open access
Licence
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Supercapacitor Materials and Fabrication
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Materials Science › Materials Chemistry › Graphene research and applications
Keywords
nitrogen-doped graphene, supercapacitor electrodes, green synthesis, PET waste, PET bottle recycling, urea, specific capacitance, energy density, cycling stability, waste valorization, energy storage

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