苏州大学廖凡/刘阳/「国家杰青」康振辉&邵敏華最新AM丨相工程稳住高价铱！

TL;DR - An Advanced Materials study shows that phase-engineered 1T-IrO₂ can reduce iridium use while improving the activity and durability of proton-exchange membrane water electrolysis for intermittent renewable energy.

• Four IrO₂ phases showed a consistent activity ranking: 1T > 3R > Tri > rutile.
• At 0.4 mgIr cm⁻², 1T-IrO₂ delivered 3 A cm⁻² at 1.75 V and operated for 2,000 hours at 2 A cm⁻².
• Operando spectroscopy linked its performance to the formation and stabilization of high-valence Ir active sites.
• Raman and infrared measurements identified OH, O, and *OOH intermediates, supporting an adsorbate-evolution mechanism.