Liquid metal-based catalysts for the electroreduction of carbon dioxide into solid carbon

The emergence of liquid metal catalysts endows electrocatalytic processes with enhanced efficiencies by eliminating coking issues that rapidly deactivate conventional solid catalysts. Alloying them with trace amounts of redox-active metal additives can further improve their catalytic activity. Here we report a vanadium-liquid metal alloy with superior activity that can drive electrochemical reduction of CO2 into solid carbon. The reaction mechanism has been thoroughly investigated and discussed. In addition, artificial neural networks trained by machine learning have been demonstrated to be powerful in predicting performance of LM alloys with various compositions.

Automated summary

The emergence of liquid metal catalysts improves the efficiency of electrocatalytic processes by eliminating coking issues faced by conventional solid catalysts. Alloying these catalysts with trace amounts of redox-active metal additives further enhances their catalytic activity. This study presents a vanadium-liquid metal alloy with superior activity for electrochemical reduction of CO2 into solid carbon. The reaction mechanism has been thoroughly investigated and discussed. Additionally, machine learning-trained artificial neural networks have shown potential in predicting the performance of liquid metal alloys with different compositions.