摘要
Electrochemical CO2 reduction reaction (CO2RR) has emerged as a key negative-emission technology, yet its industrial adoption hinges on cathode catalysts that deliver high selectivity and production rates at low cost. Herein, we reported a facile hydrothermal route to synthesize different scales of ZnOHF ultrathin nanowires with hybridized ZnO/ZnOHF heterointerfaces, where the 40 nm variant (NW40-ZnOHF) showed a high FE of 93 % and a j CO of −17.2 mA/cm2 at −1.0 V vs RHE. The excellent intrinsic electrocatalytic properties of NW40-ZnOHF were verified, presumably owing to its high-level surface concentration of oxygen vacancies preexisted in the pristine structure and formed during CO2RR. This work highlights the significance of the synergistic effect of heterointerface and fluorine incorporation engineering for guiding the optimized design of low-cost electrocatalysts for CO2RR technology.