Patent ID: 9481938
Filing Date: 2016-11-01
CPC Classification: C25B

Claim Text:
1. An electrochemical reduction method of carbon dioxide, comprising: supplying a solution containing carbon dioxide and potassium sulfate into a reduction electrode unit in an electrochemical reactor; supplying a solution containing potassium sulfate into an oxidation electrode unit in the electrochemical reactor; and applying a current to the reduction electrode unit and the oxidation electrode unit to reduce the carbon dioxide in the reduction electrode unit, wherein the reduction electrode unit includes an amalgam electrode, wherein the amalgam electrode includes a dental amalgam, and wherein the dental amalgam includes Hg of from 35 wt % to 55 wt %, Ag of from 14 wt % to 34 wt %, Sn of from 7 wt % to 17 wt %, and Cu of from 4 wt % to 24 wt %.