The Utilization of Boron-doped Diamond Electrodes for the Electrochemical Reduction of CO ₂: Toward the production compounds with a high number of carbon atoms

The utilization of boron doped diamond (BDD) as an electrode material for the electrochemical reduction of CO ₂ has been studied in recent decades. Its stability and ability to suppress hydrogen evolution makes it an attractive choice for the electrochemical reduction of CO ₂ . It has been confirmed that, when using a bare BDD electrode, very high selectivity and productivity can be achieved in the production of formic acid. Moreover, by modifying the surface of a BDD electrode with copper (Cu) particles, we have been able to produce compounds with a high number of carbon atoms. In this article, we summarize the results of our work on the electrochemical reduction of CO ₂ using BDD electrodes, with the specific aim of the producing compounds with a high number of carbon atoms.