【摘 要】
：
The development of high-performance electrocatalysts holds the decisive key to the electrochemical CO2 reduction toward value-added products.Formic acid or formate is a desirable reduction product,but its selective production is often challenging.Tin base
【机 构】
：
Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Na
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The development of high-performance electrocatalysts holds the decisive key to the electrochemical CO2 reduction toward value-added products.Formic acid or formate is a desirable reduction product,but its selective production is often challenging.Tin based-materials have attracted great attention for formate production,and yet their performances are far from satisfactory.In this study,we reported the preparation of SnO2 nanoclusters from the controlled self-polymerization of dopamine together with SnO32-,followed by the mild-temperature calcination.The final product consisted of large primary particles that were further made of small secondary SnO2 nanocrystals.When evaluated as the electrocatalyst for CO2 reduction in 0.5 M NaHCO3,our material exhibited impressive activity,selectivity and stability for the selective CO2 reduction to formate.A peak formate Faradaic efficiency of ～73％ and large partial current density of 16.3 mA/cm2 was achieved at-0.92V versus reversible hydrogen electrode.
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