Bifunctional CuO-Ag/KB Catalyst for the Electrochemical Reduction of CO2 in an Alkaline Solid-State Electrolysis Cell

The conversion of carbon dioxide into value-added products is progressively gaining momentum. Several strategies have been used to develop technologies that reduce the net emissions of CO2. The utilisation of CO2 could either contribute to carbon recycling. In this paper, the transformation of CO2 w...

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Bibliographic Details
Published in:Catalysts 2022-03, Vol.12 (3), p.293
Main Authors: Zignani, Sabrina Campagna, Lo Faro, Massimiliano, Palella, Alessandra, Spadaro, Lorenzo, Trocino, Stefano, Lo Vecchio, Carmelo, Aricò, Antonino Salvatore
Format: Article
Language:English
Subjects:
Alcohols
Anodes
Carbon dioxide
Catalysts
Cathodes
Chemical reactions
Chemical reduction
Efficiency
Electrolysis
Electrolytes
Ethanol
Investigations
Morphology
Poisoning
Raw materials
Selectivity
Sodium bicarbonate
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Summary:The conversion of carbon dioxide into value-added products is progressively gaining momentum. Several strategies have been used to develop technologies that reduce the net emissions of CO2. The utilisation of CO2 could either contribute to carbon recycling. In this paper, the transformation of CO2 was investigated in a coelectrolysis cell constituted of a solid polymer electrolyte, a carbon-supported CuO-Ag composite cathode and NiFeOx anode. Noncritical raw materials were synthesised according to the oxalate method and investigated in an alkaline environment. Low-carbon alcohols were obtained with a specific selectivity for ethanol and methanol over the CuO-Ag/KB cathode. The reaction rates at 1.6 V and 1.8 V cell voltages have been determined in steady-state experiments using NaHCO3 supporting electrolyte recirculated at the anode.
ISSN:2073-4344
2073-4344
DOI:10.3390/catal12030293