September 8, 2020, scitechdaily.com: Breakthrough Electrocatalyst Turns Carbon Dioxide Into Ethanol: Citat: "... A research team led by scientists from Argonne National Laboratory, the University of Chicago’s Pritzker School of Molecular Engineering and Northern Illinois University has discovered a new electrocatalyst that can consistently convert carbon dioxide and water into ethanol with very high energy efficiency and low cost. ... The team’s catalyst consists of atomically dispersed copper on a carbon-powder support. By an electrochemical reaction, this catalyst breaks down carbon dioxide and water molecules and selectively reassembles the broken molecules into ethanol under an external electric field. ... But the electrocatalytic selectivity, or “Faradaic efficiency,” of the new method is over 90%—much higher than any other reported process. What’s more, the catalyst operates stably over extended operation at low voltage. ... Because the process runs at low temperature and pressure, it can start and stop rapidly in response to the intermittent supply of the renewable electricity. ..."
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