Balancing Ru–O bond covalency and strength <i>via</i> atomic Ta doping for robust acidic oxygen evolution
Caini Ma, Ning Zhang, Depeng Wang, Jian Ren, Tao Jiang, Tong Liu, Alexandra A. Zverko, Haixia Zhong, Xinbo Zhang
Abstract
Atomic Ta doping via a molten-salt route forms asymmetric Ta–O–Ru active sites that optimize Ru–O covalency and reinforce the Ta–O–Ru linkage, enabling RuO x –10Ta to achieve 189 mV at 10 mA cm −2 and >700 h stability of acidic OER.
Topics & Concepts
DopingMaterials scienceOxygenOxygen evolutionAtomic layer depositionChemistryBond strengthStability (learning theory)Atomic force microscopyOxygen atomCrystallographyChemical physicsBond lengthChemical bondNanotechnologyWork (physics)Inorganic chemistryAtomic oxygenCatalysisRubredoxinPhysical chemistryAtomic unitsChemical engineeringElectrocatalysts for Energy ConversionFuel Cells and Related MaterialsElectrochemical Analysis and Applications