During the electrochemical reduction of CO2 (also known as CO2RR), the cathode catalyst is the most important component since this is the electrode where the reduction of CO2 molecules to other compounds would happen and it is important that the selected cathode catalyst material is favoring the production of a specific compound instead of many compounds.  Carbon transformation is very important for achieving the carbon neutrality across the globe and CO2RR is considered an attractive method because of the mild reaction conditions involved in.