Fabrication, Microstructure, and Electrochemical Analysis of Poly(azomethine ether)-derived Carbon Nanofibers Coated with Nickel-Cobalt Oxide for Hybrid Electrode Material Applications
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초록
내용
Electric double-layer capacitors (EDLCs) based on carbon electrode materials store electric energy through electrostatic forces, enabling rapid charge and discharge rates. However, EDLCs are limited by low energy density and a narrow potential range. To address these limitations, we developed hybrid electrode materials by decorating poly(azomethine ether) (PAME)-based carbon nanofibers with nickel-cobalt oxides. The morphology and microstructure of the composite nanofibers were analyzed using SEM, EDS, XRD, and XPS. Electrochemical analysis revealed that the composite nanofibers, i.e., PAME-derived carbon nanofibers coated with nickel-cobalt oxides, exhibited a specific capacitance of over 527 F/g, more than three times higher than that of PAME-based carbon fibers alone. This advancement enabled us to produce a hybrid supercapacitor by combining PAME-derived carbon fibers with composite fibers coated with nickel-cobalt oxides.