It looks like the cold fusion device used by Naudin only instead of Baking Soda it uses salt in the water.
The cup should be Stainless Steel and the electrode should be tungsten, and probably is.
I built a cold fusion reactor and tested it, worked quite well, but it ate an inch of tungsten rod in 5 minutes.
At over $3 a rod you can see how this isn't a good way to create excess energy.
But if we could come up with a rod that doesn't get eaten up or doesn't mater to us if it gets eaten up,
well then we have something worth looking into.
I don't think you can find a substance that won't be eaten,.
So the next step is to find something that we like to use up to get more energy from it.
One suggestion may be to use charcoal rods for the electrode.
As the rod burned up it also produces some cold fusion energy.
Coal may be another one.
I choose these because carbon has the highest melting point of all elements and it is most likely to work.
But then this brings us to the bingo fuel concept, that uses carbon rods under salt water.

This is nothing els than an Power discharge  from continous some KV.

It is same if you do this berween 2 metallic-wires or even "SAT Water"
that is only used as an low resistance conductor
Pese

Do not "wonder" over this ...

@professor

Jes. this here can be DC or AC from 50 or 60 Hz Hv Transoformer diectly. (as
Neon tube transformer /2x 5000V or Oil (gas) burner ignition (home heating) (4500volts)
or so on.
RF unneeded for this application.

That flame that Kazius produce is another
an do not need the existence od an Ingnition
wire that hold  an flame in this "Spark-Gap"

Kazius use Short-Wave RF that produce
more complicate  and more effectfully
an NEW  Science, that search for
-understanding- it ......

G.Pese