Electrochemical devices comprising novel catalyst mixtures
AssigneeDioxide Materials, Inc.
InventorsRichard I. Masel, Zengcai Liu, Brian Rosen
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Abstract
Electrochemical devices comprising electrocatalyst mixtures include at least one Catalytically Active Element and, as a separate constituent, one Helper Catalyst. The electrocatalysts can be used to increase the rate, modify the selectivity or lower the overpotential of chemical reactions. These electrocatalysts are useful for a variety of chemical reactions including, in particular, the electrochemical conversion of CO2. Chemical processes employing these catalysts produce CO, HCO−, H2CO, (HCOO)−, HCOOH, CH3OH, CH4, C2H4, CH3CH2OH, CH3COO−, CH3COOH, C2H6, (COOH)2, or (COO−)2. Devices using the electrocatalysts include, for example, a CO2 sensor and a CO2 electrolyzer.
Claims16
An electrochemical device comprising:
- an anode and a cathode, the cathode comprising at least one Catalytically Active Element, the at least one Catalytically Active Element contacting both a Positively Charged Cyclic Amine and carbon dioxide (CO2), wherein said Positively Charged Cyclic Amine comprises a polymer and wherein, when electrical energy is applied to create a cell voltage between the anode and the cathode, the electrochemical device is capable of converting at least a portion of the CO2 to a carbonaceous product when the cell voltage is equal to 2.8 V, the conversion effectuated electrochemically with electrical energy as the primary energy source, said carbonaceous product consisting of one of CO, HCO−, H2CO, (HCOO)−, HCOOH, CH4, C2H4, CH3CH2OH, CH3OH, CH3COO−, CH3COOH, C2H6, (COOH)2 and (COO−)2.
Dependencies are inferred from the claim text.