研究目的
To develop and evaluate a nanocomposite of non-peripheral octamethyl-substituted copper(II) phthalocyanine (N-CuMe2Pc) nanorods and graphene oxide (GO) for use as an electrode material in symmetric supercapacitors, aiming to enhance specific capacitance and cyclic stability through synergistic effects.
研究成果
The N-CuMe2Pc/GO nanocomposite, particularly the G10P2 ratio, demonstrates superior electrochemical performance with a high specific capacitance of 291.6 F g?1 and excellent cyclic stability of 100.1% retention over 5000 cycles, attributed to synergistic effects that prevent aggregation and enhance ion transport. This makes it a promising electrode material for next-generation supercapacitors, with potential for further optimization and application in energy storage systems.
研究不足
The study is limited to laboratory-scale synthesis and testing; scalability for industrial applications is not addressed. The use of acidic electrolyte (1 M H2SO4) may pose challenges for certain practical devices. Performance comparisons are made with specific materials, and long-term stability beyond 5000 cycles was not evaluated.
1：Experimental Design and Method Selection:
The study involved synthesizing N-CuMe2Pc nanorods and preparing composites with graphene oxide via ultrasound and solvent evaporation methods to leverage synergistic effects for improved electrochemical performance in supercapacitors.
2：Sample Selection and Data Sources:
Materials included 3,6-dimethyl phthalonitrile, copper chloride, DBU, 1-pentanol, graphene oxide (purchased from XFNano), and organic solvents. Composites were prepared with varying ratios (G10P1, G10P2, G10P4) of N-CuMe2Pc and GO.
3：List of Experimental Equipment and Materials:
Equipment included ultrasound bath, sublimation machine (Technol VDS-80), TEM (Tecnai F30), SEM (ZEISS), BET analyzer (BET-ASAP2020), electrochemical analyzer (CHI 660E workstation), carbon paper, Ag/AgCl reference electrode, Pt counter electrode. Materials included N-CuMe2Pc, GO, carbon black, Nafion, ethanol, 1 M H2SO4 electrolyte.
4：Experimental Procedures and Operational Workflow:
Synthesis of N-CuMe2Pc involved reaction at 135°C, purification by sublimation. Nanorods were formed using methanesulfonic acid and deionized water. Composites were prepared by mixing in dichlorobenzene with ultrasound and stirring. Electrodes were fabricated by coating slurry on carbon paper. Electrochemical measurements (CV, GCD, EIS) were conducted in 1 M H2SO
5：Data Analysis Methods:
Specific capacitance was calculated from CV and GCD curves using standard formulas. EIS data were fitted using ECLab software. Morphological and surface area analyses were performed using TEM, SEM, and BET.
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