Electrolysis cell and method of use
First Claim
1. An improved electrolysis cell for the reduction of carbon dioxide having an anode, a cathode and a solid polymer electrolyte, the improvement comprising a primary carbon dioxide reducing cathode containing a catalytic material having a hydrogen overvoltage greater than platinum and a secondary carbon dioxide reducing cathode having a hydrogen overvoltage greater than platinum thereby resulting in the suppression of the formation of hydrogen gas and improved efficiency for the reduction of carbon dioxide.
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Abstract
The present invention discloses an improved solid polymer electrolysis cell for the reduction of carbon dioxide. The improvement being the use of a cathode having a metal phthalocyanine catalyst which results in the suppression of the formation of hydrogen during the reduction process and the subsequent improved conversion efficiency for carbon dioxide.
105 Citations
27 Claims
- 1. An improved electrolysis cell for the reduction of carbon dioxide having an anode, a cathode and a solid polymer electrolyte, the improvement comprising a primary carbon dioxide reducing cathode containing a catalytic material having a hydrogen overvoltage greater than platinum and a secondary carbon dioxide reducing cathode having a hydrogen overvoltage greater than platinum thereby resulting in the suppression of the formation of hydrogen gas and improved efficiency for the reduction of carbon dioxide.
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15. A method for reducing carbon dioxide in an electrolysis cell having an anode a cathode and a solid polymer electrolyte comprising;
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contacting the anode with a hydrogen containing material, converting said hydrogen containing material to hydrogen ions, transporting said hydrogen ions through the solid polymer electrolyte to the cathode; contacting the cathode with carbon dioxide; thereby causing the carbon dioxide to react with the hydrogen ions to form organic compounds wherein the improvement comprises a cathode having a primary and secondary cathode wherein said primary cathode comprises a metal phthalocyanine and said secondary cathode comprises materials capable of reducing carbon dioxide and also having a hydrogen overvoltage greater than platinum.
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Specification