研究目的
To investigate the scalable modulation of reduced graphene oxide (RGO) properties by regulating graphite oxide (GtO) precursors for enhanced supercapacitor performance.
研究成果
The thickness and loose degree of GtO precursors significantly affect RGO properties, enabling tunable SSA, defects, and electrochemical performance. The flame method is effective for scalable RGO production and composite preparation, with potential for high supercapacitor applications.
研究不足
The method may have issues with stability and repeatability; cycle performance of some materials is not optimal, and scalability for industrial applications needs further optimization.
1：Experimental Design and Method Selection:
The study uses a flame activation method to reduce graphite oxide (GtO) to RGO, with variations in GtO precursor thickness and drying methods to modulate properties.
2：Sample Selection and Data Sources:
GtO precursors are prepared using a modified Hummers' method, with different drying techniques (blast, vacuum, freeze drying) and thicknesses.
3：List of Experimental Equipment and Materials:
Includes an alcohol lamp for flame reduction, various drying ovens, thickness gauge, and analytical reagents.
4：Experimental Procedures and Operational Workflow:
GtO is dried and then exposed to flame for rapid reduction; RGO and composites are characterized and tested electrochemically.
5：Data Analysis Methods:
Characterization via XRD, SEM, TEM, XPS, Raman spectroscopy, BET analysis; electrochemical testing using cyclic voltammetry, galvanostatic charge/discharge, and electrochemical impedance spectroscopy.
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FEI NanoSEM 450
NanoSEM 450
FEI
Field-emission scanning electron microscopy
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Thermo Scientific K-Alpha
K-Alpha
Thermo Scientific
X-ray photoelectron spectroscopy
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Fischer thickness gauge
Germany
Measuring the thickness of GtO papers
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PANalytical X'Pert powder
PANalytical
Obtaining X-ray diffraction patterns
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TEM-2100F
2100F
Transmission electron microscopy
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LabRAM HR Evolution spectrophotometer
HR Evolution
Obtaining Raman spectra
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Quadrasorb 2 MP analyzer
2 MP
Investigating pore distribution and specific surface area
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CHI660E electrochemical workstation
660E
Shanghai Chenhua
Electrochemical measurements
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Alcohol lamp
Providing flame for reduction process
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