Advances in the design strategy of bimetallic catalysts for the electrocatalytic reduction of CO2

Abstract

Electrocatalytic reduction of CO₂ (CO₂ER) has been recognized as a promising utilization method of CO₂. Catalysts are the core of the CO₂ER and they have a great influence on the efficiency of CO₂ catalytic conversion. Bimetallic catalysts are regarded as promising candidates as they combine the properties of bimetallic metals and show intermetallic synergy and structural designability. This review summarizes the latest research progress of bimetallic catalysts in CO₂ER in recent years. The design strategies of bimetallic catalysts include improving the CO₂ adsorption capacity, increasing active sites, tuning the binding energy of intermediates, tuning the hydrogen evolution reaction, etc. Bimetallic catalyst fabrication methods have also been summarized and analyzed. In the final part of the current work, the perspectives of design and fabrication of bimetallic catalysts have also been presented, to provide a basis for the future design and synthesis of bimetallic electrocatalysts with high activity, high selectivity, and high stability.