The present disclosure provides a system for electrochemical conversion of carbon dioxide, including: a reduction electrode unit to which carbon dioxide is supplied and including a metal-containing electrode; an oxidation electrode unit including a sacrificial electrode; and an electrolyte unit including an aprotic polar organic solvent and an auxiliary electrolyte, which is in contact with the reduction electrode unit and the oxidation electrode unit, and the carbon dioxide supplied to the reduction electrode unit is electrochemically reduced so as to produce an oxalate salt.

The embodiments described herein pertain generally to an amalgam electrode, and a producing method of the amalgam electrode, and an electrochemical reduction method of carbon dioxide using the amalgam electrode.

The present disclosure provides a system for electrochemical conversion of carbon dioxide, including: a reduction electrode unit to which carbon dioxide is supplied and including a metal-containing electrode; an oxidation electrode unit including a sacrificial electrode; and an electrolyte unit including an aprotic polar organic solvent and an auxiliary electrolyte, which is in contact with the reduction electrode unit and the oxidation electrode unit, and the carbon dioxide supplied to the reduction electrode unit is electrochemically reduced so as to produce an oxalate salt.

The present invention relates to a method for manufacturing an amalgam electrode, an amalgam electrode manufactured by the method, and a method for electrochemical reduction of carbon dioxide using the amalgam electrode.

A method of oxygen evolution comprising contacting a working electrode including an iron-doped zeolitic imidazolate framework-8 (Fe-ZIF-8), a counter electrode, and a reference electrode with an aqueous electrolytic solution, applying a potential, and forming oxygen at the working electrode. The iron-doped ZIF-8 includes iron in an amount of 5 to 55 weight percent relative to the combined weight of iron and zinc in the iron-doped ZIF-8. The Fe-ZIF-8 structures are nanoparticles with a longest dimension of 0.5 to 5 m. The working electrode has an overpotential of 180 to 190 mV vs RHE at a current density of 10 mA/cm.sup.2.

A method of oxygen evolution comprising contacting a working electrode including an iron-doped zeolitic imidazolate framework-8 (Fe-ZIF-8), a counter electrode, and a reference electrode with an aqueous electrolytic solution, applying a potential, and forming oxygen at the working electrode. The iron-doped ZIF-8 includes iron in an amount of 5 to 55 weight percent relative to the combined weight of iron and zinc in the iron-doped ZIF-8. The Fe-ZIF-8 structures are nanoparticles with a longest dimension of 0.5 to 5 m. The working electrode has an overpotential of 180 to 190 mV vs RHE at a current density of 10 mA/cm.sup.2.