Ru-W Pair Sites Enabling the Ensemble Catalysis for Efficient Hydrogen Evolution.

ABSTRACT: Simultaneously optimizing elementary steps, such as water dissociation, hydroxyl transferring, and hydrogen combination, is crucial yet challenging for achieving efficient hydrogen evolution reaction (HER) in alkaline media. Herein, Ru single atom-doped WO₂ nanoparticles with atomically dispersed Ru-W pair sites (Ru-W/WO₂ -800) are developed using a crystalline lattice-confined strategy, aiming to gain efficient alkaline HER. It is found that Ru-W/WO₂ -800 exhibits remarkable HER activity, characterized by a low overpotential (11 mV at 10 mA cm^-2 ), notable mass activity (5863 mA mg^-1 Ru at 50 mV), and robust stability (500 h at 250 mA cm^-2 ). The highly efficient activity of Ru-W/WO₂ -800 is attributed to the syn

SUBMITTER: Ma W 

PROVIDER: S-EPMC10502621 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature