Friends,
From what I understand, the object of polarity switching in the process of
brewing AIS is to eliminate the normal silver oxide accumulation in the
cathode and the harder coat of silver oxide in the cathode, which maintains
both electrodes clean.
A determinate ammount of silver oxide will be produced in batch "A" without
polarity switching, which at the end of the process will have produced a
noticeable moderate dark grey "beard" on the cathode.
If we have an identical batch "B" (identical water quality and ammount,
temperature, process time, current flow, container, electrodes, etc.) and
have polarity switching during the process, I assume aproximately the same
ammount of silver oxide will be produced, but instead of accumulating it is,
in every switching of the polarity, solving into the water, aside from the
ions and colloidal particles being produced.
If, after batch "A" is finished, the current is stopped and the electrodes
left in the produced EIS, after a few seconds the cathode "beard" starts
turning into a "cascade" mostly dissolving in the produced batch, and a
smaller part sedimenting at the bottom of the glass jar.
If this is the case, the only basic difference between "A" and "B" would be
cleaner electrodes in "B". Both will have a determined ammount of silver
oxide incorporated, instead of being cleaned off at intervals during the
process.
Regards
Carlos
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