Bicontinuous RuO₂ nanoreactors for acidic water oxidation.

ABSTRACT: Improving activity and stability of Ruthenium (Ru)-based catalysts in acidic environments is eager to replace more expensive Iridium (Ir)-based materials as practical anode catalyst for proton-exchange membrane water electrolyzers (PEMWEs). Here, a bicontinuous nanoreactor composed of multiscale defective RuO₂ nanomonomers (MD-RuO₂-BN) is conceived and confirmed by three-dimensional tomograph reconstruction technology. The unique bicontinuous nanoreactor structure provides abundant active sites and rapid mass transfer capability through a cavity confinement effect. Besides, existing vacancies and grain boundaries endow MD-RuO₂-BN with generous low-coordination Ru atoms and weakened Ru-O interaction, inhibiting the oxidation of lattice oxygen and dissolution

SUBMITTER: Chen D 

PROVIDER: S-EPMC11082236 | biostudies-literature | 2024 May

REPOSITORIES: biostudies-literature