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Séminaire PLUM

Jeudi 27 Juin à 16h
Salle Erwin Bertaut, F418

Orateur : Ikuya Yamada (Osaka University)
"High-pressure synthesis of novel electrocatalysts"


High-pressure synthesis method is a useful tool for obtaining novel materials with unusual structures and electronic states. We investigated electrocatalytic prorperties of transition metal oxides synthesized under high pressure. CaCu3Fe4O12, a quadruple perovskite containing Fe4+ unusual-high-valence ions, demonstrated high activity and durability for oxygen evolution reaction in alkaline conditions. We investigated quadruple perovskite CaCu3B4O12 (B = Ti-Co), leading to a conclusion that their structural feature contributes to enhanced catalytic activity. Structure-activity relationship in this system is going to be discussed.

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