[23p-B203-1~13] 1.4 Energy conversion, storage, resources and environment

2:15 PM - 2:30 PM JST(5:15 AM - 5:30 AM UTC)

[23p-B203-4] Promotion of oxygen evolution catalytic activity of based on the reaction intermediate

〇Tomohiro Fukushima¹, Kenko Tsuchimoto², Motoki Fukasawa³, Kei Murakoshi¹ (1.Department of Chemistry, Faculty of Science, Hokkaido Univ., 2.Graduate School of Chemical Sciences and Engineering, Hokkaido Univ., 3.Department of Chemistry, Hokkaido Univ.)

Keywords:

Oxygen evolution reaction,Raman spectroscopy,Machine learning

Hydrogen production through water electrolysis is important for achieving a sustainable energy society. However, it is known that the oxygen evolution reaction (OER: 2H₂O → O₂ + 4H⁺ + 4e^-) is the rate-limiting step in the reaction. Particularly in the OER, four intermediate species are involved, requiring reaction mechanism control for efficient catalysts. In previous studies, we have discovered activation of the reaction through intermediate control based on structural control, as reactions progress with different mechanisms when using nanostructured electrodes in the OER. In this research, our aim was to study the control of catalytic properties through high-sensitivity detection of intermediate species using nanostructured electrodes