Journal
ENERGY TECHNOLOGY
Volume 2, Issue 6, Pages 522-525Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ente.201402014
Keywords
carbon dioxide fixation; electrochemistry; fuels; energy conversion; phthalocyanines
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Funding
- MIUR (Italy) FIRB [RBFR10J4H7]
- Ente Cassa di Risparmio di Firenze
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We describe the realization of an electrolyzer for the electroreduction of CO2 to useful hydrocarbons and carboxylates such as CH4, C2H4, and HCOO-. The device uses a molecular copper phthalocyanine-based cathode, an anion exchange membrane, and a nanostructured Pd@Ti anode. The key advantage of this device is the exploitation of anodic alcohol oxidation instead of water oxidation. The lower operating cell potential due to the presence of ethanol leads to a net reduction in energy consumption, from 130 kWh to 77 kWh (per kg of hydrocarbon product mixture), in comparison to the cell operating with oxygen evolution.
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