Bimetallic Ni/Fe functionalized, 3D printed, self-supporting catalytic-electrodes for CO2 reduction reaction

Abstract

The development of advanced catalytic-electrodes, represents a highly valuable approach for converting CO₂ into high-value chemicals. Herein, 3D printing technology was utilized to establishing a bimetallic Ni/Fe functionalized, self-supporting catalytic-electrodes (3D-CE-NiFe) for CO₂ reduction reaction (CO₂RR). Specifically, the photocurable ink is converted into electrode precursors through 3D printing, then carbonized and further modified with bimetallic Ni/Fe to form a series of catalytic electrode. As-obtained 3D-CE-NiFe exhibits good catalytic activity and stability in the CO₂RR with the CO Faraday efficiency (FE_CO) of 87.8% and Faraday retention rate (10 h) of 91.1%. This study offers a good approach to preparation of customized catalytic-electrode, would also provide a promising model for the development of advanced catalytic electrodes in future.