“…Electrochemical CO 2 reduction reaction (CO 2 RR) carries extraordinary significance for curbing CO 2 emissions while generating value-added chemicals with economic and environmental benefits. [1] To achieve this promising goal, electrocatalysts,e .g.,n oble metals, [2] transition metals, [3] metal oxides [4] and carbon-based materials, [5] are highly imperative to overcome the thermodynamically and kinetically stability of CO 2 molecule and facilitate its activation. Particularly,the low cost metal-based electrocatalysts (e.g., Ni, Bi, Sn, Cu) have shown large potential in CO 2 electrochemical reduction to various products,i ncluding CO,f ormate and C 2+ products (e.g.,e thylene and alcohols).…”