文献类型：期刊文献

英文题名：Electrochemical Behavior of Nanoporous Supercapacitors with Oligomeric Ionic Liquids

作者：Lian, Cheng[1,2];Su, Haiping[1,2];Liu, Honglai[1,2];Wu, Jianzhong[3]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[3]Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92521 USA

年份：2018

卷号：122

期号：26

起止页码：14402

外文期刊名：JOURNAL OF PHYSICAL CHEMISTRY C

收录：;EI(收录号：20182305287518);WOS:【SCI-EXPANDED(收录号:WOS:000438178900019)】；

基金：This research was sponsored by the Fluid Interface Reactions, Structures, and Transport (FIRST) Center, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences. This research was also sponsored by the financial support by the National Natural Science Foundation of China for Innovative Research Groups (No. 51621002), 111 Project of China (No. B08021), Shanghai Sailing Program (18YF1405400), Fundamental Research Funds for the Central Universities (VVJ1814016), China Postdoctoral Science Foundation (2017M620137), and the National Postdoctoral Program for Innovative Talents (BX201700076).

语种：英文

外文关键词：Field effect transistors - Electrodes - Ionic liquids - Capacitance - Oligomers - Density functional theory

摘要：According to a recent study [Matsumoto, M. et al.; J. Am. Chem. Soc. 2017, 139, 16072-16075], an oligomeric ionic liquid (OIL) may exhibit a wide electrochemical window and an exceptionally high capacitance in electric double layer (EDL) transistors. However, little is known on applicability of OILs in EDL capacitors with porous electrodes. To understand the capacitive performance of OILs, here we investigate the charging behavior, EDL structure, and capacitance for different types of OILs using the classical density functional theory. In contrast to their application to field-effect transistors, the capacitive performance of OILs in nanoporous electrodes is sensitive to the charging potential. Although adoption of oligomeric cations shows little advantage for the electrical charging of a positive electrode, they enhance the energy storage density for negative electrodes.