Preparation of nitrogen-doped carbon using graphene Quantum dots-chitosan as the precursor and its supercapacitive behaviors
Abstract
Nitrogen-doped carbon (N-C) is pyrolytically prepared by using the nanocomposites of graphene Quantum dots (GQDs) and chitosan (CS) as the precursor. Due to the existence of GQDs nanofiller, the three-dimensional (3D) interconnected frameworks of CS are well preserved after the pyrolysis treatment; meanwhile, CS in the nanocomposites functions as nitrogen source for the N-C. The obtained N-C exhibits a considerable specific capacitance (545Fg-1 at 1Ag-1), high rate capability and excellent cyclic stability (88.9% capacitance retention after 5000cycles at 10Ag-1) when it is used as the electrode materials in supercapacitors. The well-preserved 3D frameworks and N-doping are believed to be responsible for the excellent supercapacitive behaviors of the N-C.
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The sample calcined at 600 °C has good rate capability, as cyclic voltammograms retain almost the same shape with increasing scan rate.
“It is also noted that, as the scan rate is gradually increased, the cyclic voltammograms retain almost the same shape, indicating that the sample calcined at 600 °C has good rate capability [64].”
From Influence of boron doping level and calcination temperature on hydrogen evolution reaction in acid medium of metal-free graphene aerogels (2023) · cites this paper as [64]
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- Authors
- Tan, W., Fu, R., Ji, H., Kong, Y., Xu, Y., & Qin, Y.
- Affiliations
- Changzhou University (CN)
- Corresponding author
- Kong, Yong
- Venue
- International Journal of Biological Macromolecules
- Publisher
- Elsevier BV
- Published
- 2018-06
- Volume
- 112
- Pages
- 561-566
- ISSN
- 0141-8130 (ISSN-L)
- OpenAlex
- W2792479757
- Cited by
- 34
- References
- 34
- Citations by year
- 2026: 2 · 2025: 3 · 2024: 4 · 2023: 3 · 2022: 8 · 2021: 2 · 2020: 4 · 2019: 6 · 2018: 2
- FWCI
- 1.05
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- International Journal of Biological Macromolecules (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Natural Science Foundation of Jiangsu Province (BK20171194, BK20150269)
- Jiangsu Province (BE2017088)
- Changzhou high-tech Key Laboratory (CM20153001)
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- 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 carbon, graphene quantum dots, chitosan, supercapacitors, pyrolysis, carbon nanocomposites, nitrogen doping, specific capacitance, rate capability, cycling stability, electrode materials
- MeSH terms
- Carbon, Electrochemistry, Graphite, Nitrogen, Thermogravimetry, X-Ray Diffraction, Spectroscopy, Fourier Transform Infrared, Quantum Dots, Chitosan, Photoelectron Spectroscopy
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