Engineering Interfacial Aerophilicity of Nickel-Embedded Nitrogen-Doped CNTs for Electrochemical CO2 Reduction

Electrochemical CO2 reduction reaction (CO2RR) is a promising approach for conversion of CO2 to value-added chemicals. In this contribution, we demonstrated an electrode design strategy via wettability control and fabricated a freestanding three-dimensional electrode. This electrode design strategy created more three-phase (solid-liquid-gas) contacts due to the sufficient amount of CO2 gas bubbles attached to the surface of the electrode under catalytic turnover conditions and the ongoing change of electrolyte wetting, and replacement of electrolyte by the gas bubble promotes the activity of CO2RR. This work exploits a new way that sheds light on electrode design for underwater gas-consumption electrocatalytic applications.