Boosting electroreduction CO₂ reduction to formate at ampere level over La doped Bi catalyst

Electrochemical carbon dioxide (CO₂) reduction reaction (CO₂RR) to high-value-added chemicals is a promising strategy for CO₂ utilization and renewable energy storage. However, the practical application is restricted by the low productivity. Here we prepare a La doped Bi catalysts. The Faradaic efficiency (FE) for formate could reach up to 96.4% with a current density of 1.1A cm⁻² at −1.7 V vs RHE. Experiments revealed that the doping La increased the catalytic active sites and reduced the charge transfer resistance, which could enhance the performance of CO₂RR significantly.