The Electrochemical Behavior of Bifunctional Two-Dimensional VCo(Ni)-MOF for Alkaline Oxygen Evolution Reactions and Supercapacitor Applications

and no activity decay after continuous operation for 20 h. DFT calculations confirm that the 2D confinement effect shifts the d-band center of Co to -1.126 eV, significantly reducing the energy barrier for the formation of *O intermediates to 1.88 eV and accelerating the OER kinetics. The interlayer fast electron/ion channels ensure the ultrahigh rate and long life of supercapacitors. This work clarifies the intrinsic correlation between the "two-dimensional structure-electronic regulation-interface reaction", providing a universal strategy for designing efficient, stable, and integrated two-dimensional MOF materials for catalysis and energy storage.