We investigate energy storage and energy conversion materials for the efficient use of electrical energy, and synthesis processes of functional materials via electrochemical operation. Current research topics are as follows:

1. Next-generation rechargeable battery materials using multivalent cations as carieer ions.
2. Elucidation and design of the mechanism of the activity of electrochemical catalysts.
3. Anticorrosion technologies using electrochemical operation.

1. W. Liu, K. Kawano, M. Kamiko, Y. Kato, Y. Okazaki, I. Yamada, and S. Yagi, “
   Effects of A-site Cations in Quadruple Perovskite Ruthenates on Oxygen Evolution Catalysis in Acidic Aqueous Solutions”, Small, 18, 2202439 (2022).
2. J. Han, S. Yagi, H. Takeuchi, M. Nakayama, and T. Ichitsubo, “
   Catalytic Mechanism of Spinel Oxides for Oxidative Electrolyte Decomposition in Mg Rechargeable Batteries”, J. Mater. Chem. A, 9, 26401–26409 (2021).
3. I. Yamada, H. Fujii, A. Takamatsu, H. Ikeno, K. Wada, H. Tsukasaki, S. Kawaguchi, S. Mori, and S. Yagi: “Bifunctional Oxygen Reaction Catalysis of Quadruple Manganese Perovskites”, Adv. Mater., 29 (2017) 1603004.
4. S. Yagi, I. Yamada, H. Tsukasaki, A. Seno, M. Murakami, H. Fujii, H. Chen, N. Umezawa, H. Abe, N. Nishiyama, S. Mori: “Covalency-reinforced oxygen evolution reaction catalyst”, Nature Commun., 6 (2015) 8249.
5. S. Yagi, M. Fukuda, T. Ichitsubo, K. Nitta, M. Mizumaki, E. Matsubara, “EQCM analysis of Redox Behavior of CuFe Prussian Blue Analog in Mg Battery Electrolytes”, J. Electrochem. Soc., 162(12) (2015) A2356-A2361.