Has anyone heard how to replicate the John Kanzius salt water burn experiment?

[kolbacict]

That is, is it enough to connect a high-frequency generator to one electrode of a conventional electrolyzer with direct current? By separating the DC source with a high voltage high frequency choke? 

No

Why not actually? During DC electrolysis, the entire electrode is enveloped in gas bubbles.When a radio frequency of sufficient power is supplied to it, plasma streamers will inevitably appear in this layer.It's just that it's unclear what will come of it.The main thing is not to forget to put the choke in order to decouple from the direct current ...

[kolbacict]

what is the reason for this frequency?
13.56 MHz

[kolbacict]

In any case, it would be interesting to investigate the impedance at different frequencies and RF powers.A cell with two electrodes running on direct current. Electrodes surrounded by a cloud of gas.And also by the dependence of the impedance at the RF on the magnitude of the constant current.Maybe someone has done such research ?

[kolbacict]

For some reason, it experimentally shows an increase in high-frequency current through the cell, when a direct current is passed through it. This is not clear to me. After all, there is an intense gas release.
There is more gas than electrolyte in the gap between the electrodes. Resistance must rise ...
The high frequency and DC circuits are decoupled by the inductor.