[P] P217~P230 Materials Chemistry

[P227] Catalytic Activity of Ca₇Co₃Ga₅O₁₈ with a Chiral Crystal Structure to Oxygen Evolution Reaction

○Tomoya Yoda¹, Hidenobu Murata³, Masao Kamiko¹, Kenta Kimura², Chubo Wang¹, Hidekazu Ikeno², Shunsuke Yagi¹ (1. IIS, UTokyo, 2. Osaka Metro. Univ., 3. JFCC)

Keywords:

Catalyst,Cobalt oxides,Oxygen evolution reaction,Triplet state

To improve the efficiency of the oxygen evolution reaction (OER) in water electrolysis, we synthesized chiral Ca₇Co₃Ga₅O₁₈ and evaluated its catalytic activity for the OER. We found that it exhibits higher activity and stability compared to Co₃O₄, possibly due to the differences in the valence of Co and the chiral crystal structure.