Research field : Structural Chemistry
Kazuma GOTOH, Ph.D. (Science)
Physical Chemistry, Inorganic Chemistry,
Nuclear Magnetic Resonance
Current research topics are the structure, state and dynamics of molecules and ions doped in pores of nanoporous materials or materials intercalated between graphite layers. Research using solid state nuclear magnetic resonance can greatly contribute to the development of secondary batteries such as lithium ion batteries. Some novel nanocarbon materials and catalytic reactions are also developed.
Selected Publications (recent five years):
- Structure and Dynamic Behavior of Na-Diglyme Complex in the Graphite Anode of Sodium Ion Battery by 2H Nucler Magnetic Resonance, K. Gotoh, H. Maruyama, T. Miyatou, M. Mizuno, K. Urita, and H. Ishida, J. Phys. Chem. C, 120, 28152-28156 (2016).
Combination of solid state NMR and DFT calculation to elucidate the state of sodium in hard carbon electrodes, R. Morita, K. Gotoh, M. Fukunishi, K. Kubota, S. Komaba, T. Yumura, N. Nishimura, K. Deguchi, S. Ohki, T. Shimizu, and H. Ishida, J. Mater. Chem.A, 4, 13183-13193 (2016).
- Surface and interlayer base-characters in lepidocrocite titanate: The adsorption and intercalation of fatty acid, T. Maluangnont, P. Arsa, K. Limsakul, S. Juntarachairot, S. Sangsan, K. Gotoh, T. Sooknoi, J. Solid State Chem., 238, 175-181(2016).
- Sodium-Ion Intercalation Mechanism in MXene Nanosheets
S. Kajiyama, L. Szabova, K. Sodeyama, H. Iinuma, R. Morita, K. Gotoh, Y. Tateyama, M. Okubo, and A. Yamada, ACS Nano, 10, 3334-3341(2016).
Arrangement and Dynamics of Diamine, Etheric, and Tetraalkylammonium Intercalates within Graphene or Graphite Oxide Galleries by 2H NMR, K. Gotoh, C. Sugimoto, R. Morita, T. Miyatou, M. Mizuno, W. Sirisaksoontorn, M. M. Lerner, and H. Ishida, J. Phys. Chem. C, 119, 11763-11770 (2015).
In situ7Li nuclear magnetic resonance study of the relaxation effect in practical lithium ion batteries, K. Gotoh, M. Izuka, J. Arai, Y. Okada, T. Sugiyama, K. Takeda and H. Ishida, Carbon, 79, 380-387 (2014).
NMR study for electrochemically inserted Na in hard carbon electrode of sodium ion battery, K. Gotoh, T. Ishikawa, S. Shimazu, N. Yabuuchi, S. Komaba, K. Takeda, A. Goto, K. Deguchi, S. Ohki, K. Hashi, T. Shimizu and H. Ishida, J. Power Sources, 225, 137-140 (2013).
Arrangement and dispersion of Rh and Pt atoms on graphene oxide sheets, K. Gotoh, H. Hashimoto, R. Kawai, Y. Nishina, E. Fujii, T. Ohkubo, A. Itadani, Y. Kuroda and H. Ishida, Chem. Lett., 41(7), 680-682 (2012).
Electrochemical Na Insertion and Solid Electrolyte Interphase for Hard-Carbon Electrodes and Application to Na-Ion Batteries, S. Komaba, W. Murata, T. Ishikawa, N. Yabuuchi, T. Ozeki, T. Nakayama, A. Ogata, K. Gotoh and K. Fujiwara, Adv. Funct. Mater., 21, 3859-3867 (2011).
Exfoliated graphene sheets decorated with metal / metal oxide nanoparticles: simple preparation from cation exchanged graphite oxide, K. Gotoh, T. Kinumoto, E. Fujii, A. Yamamoto, H. Hashimoto, T. Ohkubo, A. Itadani, Y. Kuroda and H. Ishida, Carbon, 49, 1118-1125 (2011).