Abstract
Perovskite oxides are a class of attractive materials for their broad applications in many energy conversion and storage fields, while their catalytic performance of CO2 electroreduction (CO2ER) has been rarely investigated. Herein, all-inorganic SrSnO3 perovskite nanowires are constructed and utilized to catalyze the CO2ER for the first time. Inspiringly, such SrSnO3 NWs demonstrates impressive selectivity and activity for formate production, with considerable Faradaic efficiencies (~80%) over a broad potential range, and the highest formate partial current density of 21.6 mA cm−2, much better than that of the SnO2 nanoparticles. Further analyses reveal that the notable CO2ER activity of SrSnO3 NWs is linked to the efficient stabilization of formate intermediate (CO2•−) as well as the slow kinetics for hydrogen evolution reaction (HER). This work can inspire the development of highly efficient perovskite catalysts for CO2ER and beyond.
Published Version
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