I am an undergraduate student in aeronautics but lack some basic chemistry for this topic.
Under what conditions can CO2 be electrolyzed into pure elements just as water. Would a lower pressure mix of mercury within a vacuum allow this? Or would a liquid state/triple point be better? Once CO is formed will reduction continue? How much voltage will be required across the anode and cathode? Has any research been done on this area of chemistry? I suspect this takes a massive amount of energy as the burning process releases.