The 880th IMS colloquium

Seminar & Events Detail

Lecture Title	"Computer Simulation Study of Carbon-based Supercapacitors with an Ionic Liquid Electrolyte"
Date	Friday 20 November 2015 17:00
Lecturer	Prof. Hyung Kim (Carnegie Mellon University, USA)
Place	Institute for Molecular Science, Research Building, Seminar Room # 201
Summary	Electric double layer capacitors (EDLCs), or supercapacitors, are an important energy storage system that offers high power densities and reasonable energy densities. In this talk, we present highlights of our recent molecular dynamics computer simulation study to understand the capacitance behavior of supercapacitors based on carbon materials, in particular, activated microporous carbon and reduced graphene oxide. As an electrolyte, the ionic liquid, 1-ethyl-3-methylimidazolium tetrafluoroborate, is employed. The influence of pore size of the microporous electrodes on the specific capacitance is analyzed by employing carbon nanotube as a model system. Their anomalous capacitance behavior observed experimentally is explained in terms of the solvation effect of ions inside pores (“internal solvation”). In the case of reduced graphene oxide supercapacitors, the influence of the electrode oxidation on the electrolyte structure, cell voltage and capacitance is examined and compared with available experimental results. 880th IMS colloquiums Speaker：Prof. Hyung Kim
Contact	SAITO, Shinji IINO, Ryota & MASAOKA, Shigeyuki (The members of the committee of the IMS colloquium in 2015)

Awards & Honors International collaboration