Deleted Journal, Год журнала: 2024, Номер unknown
Опубликована: Ноя. 8, 2024
Development of highly active and stable acidic oxygen evolution reaction catalyst is very important for efficient water splitting while remains challenging. Herein, we report a ordered RuO2/WO3 inverse opals (IOs) to address the bottleneck problem see-saw relationship between activity stability, in which crystalline corrosionresistant WO3 facilitates electron transport stabilizes RuO2, whereas lattice mismatch-induced amorphousdominated RuO2 provides abundant unsaturated coordination sites enhance (OER) activity. Consequently, IOs demonstrates outstanding OER performance terms low overpotential 180 mV reach 10 mA·cm–2, excellent stability maintaining 100 hours continuous test. Experimental characterizations density functional theory calculations reveal that interface coupling can spin polarization electrons increase overlaps electronic projected states Ru d orbitals metal O p intermediates, facilitating pathway switch from mechanism adsorbate mechanism, significantly decreases energy barrier process. Meanwhile, rich vacancies supports heterostructures could inhibit over-oxidation species, so as simultaneously.
Язык: Английский