화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2021년 봄 (04/07 ~ 04/09, 대전컨벤션센터)
권호 46권 1호
발표분야 기능성 고분자
제목 Microstructural and Electrochemical Characterization of Porous Hollow Carbon Nanofibers Manufactured by Coaxial Electrospinning and Heat Treatment
초록 In recent decades, carbon nanofibers (CNFs) have been widely investigated as self-standing electrode materials for energy storage devices with high performance in specific capacitance, energy density, power density, and operational stability. Porous hollow carbon nanofibers (PHCNFs) are also studied as a promising electrode material with enhanced surface area. In this study, a series of PHCNFs is manufactured via coaxial electrospinning of polyimide (PI) precursor/lignin mixture as the shell solution and PMMA as the core solution, followed by heat treatment at different temperatures. The microstructural features of PI/lignin-derived PHCNFs as a function of the heat treatment temperature are characterized by using SEM, TEM, EDS, TGA, XRD, XPS and BET analyses. The electrical and electrochemical properties of the PHCNFs are investigated by using electrometry, cyclic voltammetry, galvanostatic charge-discharge test, and electrical impedance spectroscopy.
저자 박규태, 정영규
소속 충남대
키워드 Coaxial Electrospinning; Polyimide; Lignin; Heat Treatment; Microstructure
E-Mail ygjeong@cnu.ac.kr