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Optimizing everything else, would efficient electrolysis be possible with AC current? Most sources suggest to use DC, but can the water still be split/disassociated with AC?

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marked as duplicate by matt_black, Mithoron, hBy2Py, DrMoishe Pippik, A.K. Jan 20 at 18:37

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    $\begingroup$ It would work, but you'd alternately be generating hydrogen and then oxygen at each electrode. You really want to mix hydrogen and oxygen? It goes BOOM really easily. $\endgroup$ – MaxW Jan 19 at 4:04
  • $\begingroup$ Especially when electricity is involved... but it could be a sort of water filled AC charged power cell, or something. The gas is stored until needed and then is exploded. However, you would have to be careful about energy fluctuation and electrical surges. $\endgroup$ – Felix Jan 19 at 12:44
  • $\begingroup$ In addition to what MaxW wrote you would not expect electrolysis throughout the wave, only when the voltage exceeds the redox potential, so it would be less efficient. Also, AC can mean a lot of things. It would also depend on the frequency. $\endgroup$ – Night Writer Jan 19 at 12:49
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    $\begingroup$ I found a similar question with the answer I was looking for: chemistry.stackexchange.com/questions/62980/… $\endgroup$ – Felix Jan 19 at 12:53