Copper-based electrocatalysts for CO(2) valorization at industrially relevant conditions

📆 Date and time: July 23, 2025 4:00-5:00 PM Bangkok | 6:00-7:00 PM Bangkok

✒️ Dr. Hong Phong DUONG 

Postdoc researcher, Laboratory of Chemistry of Biological Processes, Collège de France 

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Electrochemical CO₂ reduction reaction (CO₂RR) using carbon-neutral electricity has been considered as a promising sustainable method to synthesize valuable chemicals such as formic acid, carbonmonoxide (CO) and multi-carbon products. Direct CO₂ conversion is challenging due to simultaneous carbonate formation which increases competing hydrogen evolution and electrical resistance. Lately, two-step CO₂ conversion has gained much attention because it can alleviate those issues. In this approach, CO₂ is firstly converted into CO with a faradaic efficiency (FE) of more than 90% via a solid oxide electrochemical cell then CO will be consecutively reduced to the multi-carbon products via a high performance electrolyzer operating at an applied current density of more than 0.1 A. Copper-based electrocatalysts are intensively studied owing to the unique ability to improve C-C coupling reactions of copper, which plays an essential role in multi-carbon products formation in CO and CO₂RR. In this presentation, I will introduce several strategies including dendritic structuration, nitridation combined with metal doping and electrolyte variation to obtain selective electrocatalysts for ethylene, ethanol and n-propanol production from CORR. Mechanistic studies via in-situ characterizations and density functional theory will also be presented.