Lots of deposits

I hadn’t seen the setup in a week or two. I noticed power was 1.06 A @ 4.7 V - much higher than the 0.04 A target. I don’t know if this is due to power supply drift or someone changing the setting.

The solution was murky and there were lots of deposits:

View from above:

It seems the carbon from the anode went into solution. Here one can see the corrosion on the electrode:

A photo of the cathode deposits. They remind me of cave formations:

Some detail pictures:

The plan is to let the cathode dry out and send samples for analysis. I suspect the deposits are calcite, aragonite and dolomite - meaning calcium carbonate and magnesium carbonate.

  1. bosslab posted this