科研之友
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摘要
Electrochemical CO2 reduction to liquid multi‐carbon alcohols provides a promising way for intermittent renewable energy reservation and greenhouse effect mitigation. Cuδ+ (0δ+ is insufficient and easily reduced to Cu0. Here a Cu2S1?x catalyst with abundant Cuδ+ (0δ+, gaining an economic profit based on techno‐economic analysis. The calculation and in situ spectroscopic results reveal that the abundant Cuδ+ sites display electron‐donating ability, leading to the decrease of the reaction barrier in the potential‐determining C?C coupling step and eventually making the applied potential close to the theoretical value.(#br)Cu2S1?x hollow nanocubes with abundant and stable Cuδ+ species are synthesized and achieve ethanol‐selective electrosynthesis. The abundant Cuδ+ sites have electron‐donating ability, leading to the decrease of the reaction barrier in the potential‐determining C?C ...
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