Article

KAIST has developed a self-regenerating copper catalyst to improve CO₂ conversion efficiency. Led by Professor Dong Young Chung, the research identifies catalyst degradation mechanisms in electrochemical reactions, focusing on copper catalysts.

The study reveals that copper undergoes surface reconstruction, affecting performance. Two mechanisms were found: oxide layer formation, which temporarily increases activity but degrades performance, and partial metal dissolution and redeposition, creating new active sites.

By adding trace copper ions to the electrolyte, a balanced cycle is established, maintaining catalyst activity and enabling stable production of high-value C₂ compounds while reducing energy consumption. This breakthrough has implications for various electrochemical systems.