Magnetic Field-Driven Spin State Transformation in Promoting the Catalytic Activity of Doped Single-Atom for Hydrogen Evolution Reaction.

ABSTRACT: Developing efficient electrocatalysts for the hydrogen evolution reaction (HER) requires innovative strategies to modulate electronic structures and reaction kinetics. Herein, a ferromagnetic Ru_SAs/Ni₂P@Fe₃O₄ core-shell catalyst is designed, which synergizes Ru single-atoms (SAs) doping and external magnetic field excitation. Under a 0.3 T magnetic field, Ru_SAs/Ni₂P@Fe₃O₄-0.3 T achieves a remarkably low overpotential of 38.9 mV at 10 mA cm^-2 and a Tafel slope of 39.5 mV dec^-1 in alkaline media, outperforming its counterparts without magnetic stimulation. Advanced characterization (XANES, Mössbauer, EPR, SQUID) and density functional theory calculations reveal that the magnetic fiel

SUBMITTER: Wang C 

PROVIDER: S-EPMC12848647 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature