第 677 回

化学・物質⼯学セミナー(グリーンシステム創成科学専攻

平成 28 年度第 5 回国際セミナー)

Recent advances on the understanding of ion adsorption/transfer
in nanoporous carbon electrodes; application to supercapacitors
Dr. Pierre-Louis Taberna
Université Paul Sabatier CIRIMAT UMR CNRS 5085, Toulouse – France記
⽇時：平成 29 年 1 ⽉ 19 ⽇（⽊）
場所：⻑崎⼤学⽂教キャンパス

16：10 〜 17：40

総合教育研究棟 3F ⼤講義室

本セミナーは，⼯学研究科グリーンシステム創成科学専攻の「平成 28 年度第 5 回国際セミナー」及び未来⼯学研究センター研究課題の講演会を兼ねています。万障お繰り合わせの上，ご参加下さい。

Abstract
Electrochemical double layer capacitors are electrochemical energy storage devices that can store energythrough electrostatic charges onto activated carbon electrodes. They exhibit performances, in term of power andenergy densities, between the secondary batteries and the conventional capacitors — making them suitable for
instance for energy harvesting, such as braking energy recovery[1]. Nevertheless, they still suffer from a poor
specific energy, thus one main objective these last past years have been to develop new advanced electrodematerials such as nanoporous carbons.
As a matter of fact such kind of carbons have raised more and more attention because it has been proven thatanomalous specific capacitance was obtained when average pore size is lower than 1nm — it is to say below thesolvated ion size[2]. What’s more, a maximum capacitance is even reached when pore size matches the ionsize[3].
Since then, many researches have been carried out in order to explain such kind of un- expected behavior in
nanoporous carbons such as cavity microelectrode studies[4], molec- ular dynamic studies[5, 6, 7], quartz
microblance studies without[8] and with NMR[9, 10, 11].
Overall it has been shown that ions are more efficiently stored in nanopores — they are partially desolvated andget closer to the carbon surface — and they move quickly even- though they are confined — the diffusion
coefficient is only decreased slightly as compared to the bulk electrolyte. Today’s research is focused on
developing new nanoporous acti- vated carbons to get access to new enhanced electrochemical double layer
capacitors.

セミナー世話⼈
⼯学研究科物質科学部⾨⽠⽥幸幾

TEL 095-819-2668, E-mail: urita@nagasaki-u.ac.jp

References[1] J. R. Miller and P. Simon. MATERIALS SCIENCE: Electrochemical Capacitors for Energy Management.
Science, 321(5889):651–652, August 2008.
[2] J. Chmiola, G. Yushin, Y. Gogotsi, C. Portet, P. Simon, and P. L. Taberna. Anoma- lous increase in carbon
capacitance at pore sizes less than 1 nanometer. Science, 313(5794):1760–1763, September 2006.
[3] J. Chmiola, C. Largeot, P. L. Taberna, P. Simon, and Y. Gogotsi. Desolvation of ions in subnanometer pores
and its effect on capacitance and double-layer theory. Angewandte Chemie-International Edition,
47(18):3392–3395, 2008.
[4] R. Lin, P. L. Taberna, J. Chmiola, D. Guay, Y. Gogotsi, and P. Simon. Microelec- trode Study of Pore Size,Ion Size, and Solvent Effects on the Charge/Discharge Behavior of Microporous Carbons for Electrical
Double-Layer Capacitors. Journal of the Electrochemical Society, 156(1):A7–A12, 2009.
[5] C. Merlet, B. Rotenberg, P. A. Madden, P. L. Taberna, P. Simon, Y. Gogotsi, and M. Salanne. On themolecular origin of superca- pacitance in nanoporous carbon electrodes. Nature Materials, 11(4):306–310,April 2012.
[6] C. Pean, C. Merlet, B. Rotenberg, B. Daffos, P. L. Taberna, P. A. Madden, P. Simon, and M. Salanne.
Modeling ion adsorption and dynamics in nanoporous carbon electrodes. Abstracts of Papers of the American
Chemical Society, 247, March 2014.
[7] C. Pean, C. Merlet, B. Rotenberg, P. A. Madden, P. L. Taberna, B. Daffos, M. Salanne, and P. Simon. On theDynamics of Charging in Nanoporous Carbon-Based Supercapacitors. ACS Nano, 8(2):1576–1583, February
2014.
[8] W. Y. Tsai, P. L. Taberna, and P. Simon. Electrochemical Quartz Crystal Microbalance (EQCM) Study of Ion
Dynamics in Nanoporous Carbons. Journal of the American Chemical Society, 136(24):8722–8728, June
2014.
[9] H. Wang, T. K. J. Koester, N. M. Trease, J. Segalini, P. L. Taberna, P. Simon, Y. Gogotsi, and C. P. Grey.
Real-Time NMR Studies of Electrochemical Double-Layer Capacitors. Journal of the American Chemical
Society, 133(48):19270–19273, December 2011.
[10] J. M. Griffin, A. C. Forse, H. Wang, N. M. Trease, P. L. Taberna, P. Simon, and C. P. Grey. Ion counting insupercapacitor electrodes using NMR spectroscopy. Faraday Discussions, 176:49–68, 2014.
[11] J. M. Griffin, A. C. Forse, W. Y. Tsai, P. L. Taberna, P. Simon, and C. P. Grey. In situ NMR andelectrochemical quartz crystal microbalance techniques reveal the structure of the electrical double layer insupercapacitors. Nature Materials, 14(8):812–819, August 2015.