AMALGAM ELECTRODE, PREPARING METHOD THEREOF, AND METHOD OF ELECTROCHEMICAL REDUCTION OF CARBON DIOXIDE USING THE SAME

90% efficient conversion of carbon dioxide with porous amalgam electrode

This technology concerns the manufacturing method of an amalgam electrode and the electrochemical reduction method of carbon dioxide using an amalgam electrode.

The existing amalgam electrode manufacturing method had difficulties in efficiently converting carbon dioxide due to limitations in implementing porous electrodes, but this technology provides a method of forming an amalgam layer on the surface of a porous substrate electrode by electrodepositing mercury and metal.

This technology overcomes the shortcomings of existing methods and utilizes a large surface area to achieve excellent conversion efficiency of up to 90% or more in the electrochemical reduction reaction of carbon dioxide. It also provides environmental benefits by utilizing safe dental amalgam formulations.

‍

‍

‍

‍

Key Features:

• Manufacture an amalgam electrode using an electroplating method
• Submerge the substrate electrode in a solution containing metal ions such as mercury, silver, tin, and copper, and sequentially deposit metal layers through an electrochemical reduction reaction
• Applicable to porous substrates, greatly increasing the effective surface area of the electrode
• Stable electrolysis is possible even at high current densities, and efficiency lasts for more than 21 hours

‍

‍

This technology was developed through support from the Korea Institute of Energy Technology Evaluation and Planning's research project to develop innovative technology for the existing production process of high-value chemical products using captured CO₂.

‍

‍

‍

‍