Fabrication and Electrochemical Properties of Carbon Nanofibers Derived from Polyimide and Lignin
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초록
내용
Recently, carbon nanofibers (CNFs) are attracting lots of attention due to their unique microstructures and electrochemical properties for the electrode material applications of energy storage devices, such as rechargeable batteries and supercapacitors. In this study, to attain flexible and porous CNFs with high energy storage performance, polyimide (PI) and lignin were chosen as the precursors of CNFs. For the purpose, a series of mixed solutions of PI precursor and lignin was electrospun into nanofibers, which were then imidized and carbonized at different temperatures. The microstructural and morphological features of PI/lignin-derived CNFs were characterized by using SEM, TGA, Raman, and XRD. The electrical and electrochemical properties of the CNFs were investigated by using electrometer, cyclic voltammetry, and galvanostatic charge-discharge test