报告主题: Carbon nanofibers wrapped with zinc oxide nano-flakes for supercapacitor applications
报告时间: 2018.5.20 14:30-15:15
报告人及简介: Dr. Jae Kyoung Ko received the Ph.D. degree in Department of Textile Engineering from Chonbuk National University, Korea, in 2017. After graduation, she worked as a chief researcher at CJ Cheil-Jedang Product Development Center (CJ) 2000-2012. Since 2012 She worked as a Team manager in Korea Institute of Convergence Textile, period in 2013~2018. Currently, she is a research professor in the Department of Organic Materials & Fiber Engineering. Her main a research and development professional with expertise in textile engineering and polymer science. Key contributor to process optimization through data analysis and laboratory methodologies. Especially drug materials study for medical application.
报告大纲: A combination of both electrospinng and hydrothermal processes were used to synthesize the ZnO/CNFs composite as an effective electrode material for supercapacitors. The morphology of the as-prepared composite clearly showed that the carbon nanofibers were successfully wrapped with ZnO nano-flakes. The electrochemical performance of the as-prepared composite was carried out by cyclic Voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy. The specific capacitance of the ZnO/CNFs composite washigher (260 F/g) than pristine ZnO nanofibers (118 F/g) at the lower current density 0.25 A/g. As-fabricated ZnO/CNFs composite exhibited good capacity retention (73.3%) after 1000 cycles. The as-fabricated composite has great potential applications in developing energy storage devices.