报告题目：Electrochemical energy storage: Supercapacitor application of vertical graphene nanosheets

报告人：Prof. Sang Mun Jeong

Department of Chemical Engineering, Chungbuk National University, Republic of Korea

主持人：蒋青教授

报告时间：2018年10月31日15:30-16:20

报告地点：吉林大学南岭校区机械材料馆209学术报告厅

主办单位：吉林大学材料科学与工程学院 汽车材料教育部重点实验室

摘要：Aqueous asymmetric supercapacitor, with high power density and superior cycle ability in comparison to conventional batteries, are presently considered as the most promising contender for energy storage electrode. However, fabricating an electrode material and choosing a suitable aqueous electrolyte are vital in developing a supercapacitor device with high charge storage capacity. Herein, we report a feasible method to synthesize MnO₂/vertical graphene nanosheets (VGN) and Fe₂O₃/VGN as positive and negative electrodes, respectively. The fabricated asymmetric device exhibits a specific capacitance of 76 mF/cm²and energy density of 71 Wh/cm²with an excellent electrochemical stability up to 12000 cycles over a potential window of 2.6 V. The commendable performance of asymmetric supercapacitor device authenticate its potential utilization for next-generation portable energy storage device.

报告人简介：Sang Mun Jeong is a professor in Department of Chemical Engineering, Chungbuk National University and a director of the Korean Institute of Chemical Engineers. He obtained his Ph.D. degree in Chemical Engineering from Korea Advanced Institute of Science and Technology (KAIST) in 1999. He worked previously at CPE Lyon (France), University of Nottingham (UK), University of Utah (US), LG Chemical, and Korea Atomic Energy Research Institute (KAERI). He has published over 90 articles on chemical and electrochemical reactions for application to energy, environment and materials, and is cited as the inventor on over 20 patents.