Switching CO 2 Electroreduction Pathways via Polyvinylpyrrolidone‐Mediated Water Configuration Control

. This trend is consistent across various Cu-based catalysts, highlighting the universality of this approach. Mechanistic studies reveal that PVP reconstructs the water configuration at the cathode surface, modulating not only the adsorption strength and coverage of *CO intermediates but also the kinetics of water dissociation, thereby dictating the reaction pathway.