Chen, Jie Yin, Jun Zheng, Xiaopeng Ait Ahsaine, Hassan Zhou, Yang Dong, Chunwei Mohammed, Omar F. Takanabe, Kazuhiro Bakr, Osman M. Compositionally Screened Eutectic Catalytic Coatings on Halide Perovskite Photocathodes for Photoassisted Selective CO<sub>2</sub> Reduction Selective CO<sub>2</sub> reduction via photoelectrocatalysis is a creative approach to alleviating the energy crisis and environmental deterioration as well as to producing value-added chemicals. A considerable challenge is the development of electrocatalysts and photoelectrocatalytic systems to selectively and efficiently produce a target product. Here, we report an efficient and selective photocathode for converting CO<sub>2</sub> to HCOOH in aqueous solution. A rational compositional screening strategy was first applied to pinpoint In<sub>0.4</sub>Bi<sub>0.6</sub> from ternary In–Bi–Sn alloys as the most HCOOH-selective electrocatalyst composition among the electrocatalysts reported. A photocathode was then fabricated by coating the catalytic, protective, and conductive In<sub>0.4</sub>Bi<sub>0.6</sub> alloy layer on a halide perovskite photovoltaic, effectively utilizing its low melting point eutectic molten state. The generated photovoltage assisted reduction of the overpotential by 680 mV while producing a stable current for nearly exclusive HCOOH production under simulated AM 1.5G irradiation. This work provides a promising approach to achieving efficient and selective solar–fuel conversion. photocathode;AM 1.5 G irradiation;CO 2 reduction;0.4 Bi 0.6;HCOOH-selective electrocatalyst composition;CO 2 Reduction;target product;approach;photoelectrocatalytic systems;screening strategy;HCOOH production;680 mV;point eutectic;CO 2;0.4 Bi 0.6 alloy layer;Halide Perovskite Photocathodes;energy crisis;Compositionally Screened Eutectic Catalytic Coatings;halide perovskite photovoltaic 2019-05-08
    https://acs.figshare.com/articles/journal_contribution/Compositionally_Screened_Eutectic_Catalytic_Coatings_on_Halide_Perovskite_Photocathodes_for_Photoassisted_Selective_CO_sub_2_sub_Reduction/8118956
10.1021/acsenergylett.9b00751.s001