研究目的
To prepare carbon dots decorated graphene/polyaniline composites via supramolecular in-situ self-assembly for high-performance supercapacitors.
研究成果
The RGO@CN/PANI nanocomposites prepared via supramolecular in-situ self-assembly exhibit high specific capacitance, low charge transfer resistance, and good cycling performance, making them suitable for supercapacitor applications. The synergistic effect of RGO, carbon nanodots, and PANI, along with the regular microstructure, contributes to the enhanced electrochemical performance.
研究不足
The study focuses on the synthesis and electrochemical performance of RGO@CN/PANI composites but does not explore the scalability of the synthesis method or the long-term stability under varying environmental conditions.
1：Experimental Design and Method Selection
Supramolecular in-situ self-assembly method was used to prepare RGO@CN/PANI nanocomposites with β-CD as the bonding agent. The process involved the formation of a supramolecular system between graphene oxide and β-CD, inclusion of aniline monomers, in-situ polymerization of polyaniline on graphene oxide, and hydrothermal reduction of graphene oxide with simultaneous carbonization of β-CD to carbon dots.
2：Sample Selection and Data Sources
Natural flake graphite was used to prepare graphene oxide via the modified Hummers method. The amounts of β-CD and aniline were varied to study their effects on the composite properties.
3：List of Experimental Equipment and Materials
Materials included natural flake graphite, sulphuric acid, sodium nitrate, potassium permanganate, hydrogen peroxide, ammonium persulfate, β-cyclodextrin, citric acid, absolute ethyl alcohol, acetylene black, N-Methyl pyrrolidone, and aniline. Equipment included SEM (ZEISS Ultra 55), HRTEM (JEM-2100HR), Raman spectrometer (inVia), XRD (X’Pert PRO), FTIR spectrometer (IRPrestige-21), and XPS (ESCALAB 250 XI).
4：Experimental Procedures and Operational Workflow
Graphene oxide was prepared from natural flake graphite using the modified Hummers method. RGO@CN/PANI composites were synthesized by in-situ polymerization and one-pot hydrothermal reduction. Electrochemical measurements were conducted using a three-electrode system.
5：Data Analysis Methods
Specific capacitance was calculated from GCD curves. Electrochemical performance was evaluated through CV, GCD, and EIS measurements.
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