Carbon-Promoted Pt-Single Atoms Anchored on RuO Nanorods to Boost Electrochemical Hydrogen Evolution.

While efficient for electrochemical hydrogen evolution reaction (HER), Pt is limited by its cost and rarity. Traditional Pt catalysts and Pt single-atom (aPt) catalysts (Pt-SACs) face challenges in maintaining kinetically favorable HER pathways (Volmer-Tafel) at ultralow Pt loadings. Herein, carbon-promoted aPts were deposited on RuO without the addition of reductants.