| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2023: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2022: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2021: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
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| Outline of Final Research Achievements |
The aim of this study was to clarify the effect of different phase interfaces on the catalytic properties of water electrolytic oxygen evolution using catalyst-support two-phase interface and catalyst-support-electrolyte three-phase interface model catalysts with well-defined surface and interface structures. In the two-phase interface model, the insertion of SnO2 as an intermediate layer between the RuO2 catalyst and TiO2 support model was shown to eliminate the structural and electrical mismatch and significantly improve the catalytic activity and durability. In the three-phase interface model, we found that the oxygen-evolving reaction activity was significantly different depending on the measured location of the island structure. These results suggest that structural control of the two- and three-phase hetero-interfaces of metal-oxides is important for the improvement of oxygen-evolving catalytic properties.
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