Electrochemically Driven Formation of Sponge‐like Porous Ag Nanocubes toward Efficient CO2 Electroreduction to CO
2020
Electrochemical conversion of carbon dioxide into valuable products by utilizing renewable electricity is a thriving research field. For electrochemical reduction of CO 2 to CO, uniform sponge-like porous Ag nanocubes (SPC-Ag) integrated on carbon papers are prepared by electrochemically driven method. SPC-Ag process three dimensional (3D) porous structure and large specific surface area, which afford abundant active sites for CO 2 RR as well as reduce impedance to accelerate faster CO 2 RR kinetics. Such a distinctive organization affords SPC-Ag with outstanding electrocatalytic performance for CO 2 reduction to CO. High Faradaic efficiency (FE) (>90%) and large partial current density for CO with excellent durability are observed in a wide potential window, accompanied by a maximum value of 93% at -0.9 V vs. RHE.
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