Molecular precursor synthesis of the Rh₂O₃/Fe₂O₃ spherical architecture for enhanced acidic HER activity and durability.

ABSTRACT: Efficient hydrogen evolution catalysts that minimize noble metal content while maintaining high activity and durability are critically needed for scalable water electrolysis. Here, we introduce a molecular precursor strategy to synthesize intimately intermixed Rh₂O₃/Fe₂O₃ nanocomposites with precisely controlled 1 : 1 metal ratio. Thermal decomposition of heterobimetallic complex [Rh(acac)₃Fe(hfac)₂] (acac = acetylacetonate, hfac = hexafluoroacetylacetonate) at 300 °C yields 3D spherical Rh₂O₃/Fe₂O₃ architectures without high-temperature sintering. Electrochemical evaluation reveals that Rh₂O₃/Fe₂O₃ requires only 32 mV to reach -10 mA cm<

SUBMITTER: Zulqarnain M 

PROVIDER: S-EPMC12439602 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature