How plausible would it be to store energy in the form of ionized gas? The idea is that a gas (I am assuming a noble gas would work best) would be ionized so that some outer electrons are removed from the atoms and then a positively charged Van de Graaff generator (or something that can fulfill the same function) would drain the electrons. My guess is that this would leave a gas with positively charged atoms as the loose electrons would be removed. Am I correct so far in my reasoning? Then if an electrode in the ionized gas links it to ground or another source of electrons, wouldn't there be current flow in a wire connecting the electrode and ground? I curious to know if I am missing anything fundamental that would prohibit this from working and your thoughts on it (such as maybe it would be totally energy inefficient or something). Thanks in advance!