alufoil cell

[hartiberlin]

Now after the cell has cooled down the open
circuit voltage has gone back up to 0.65 Volts.

But when I apply a 100 Ohm load resistor the
cell only has 0.02 Volts output at this resistor.
So I will let it run now at the load resistor until tomorrow
morning and see, if it will regain some strength again.

Regards, Stefan.

[hartiberlin]

I applied some water today at the surface and the voltage at the 100 Ohm load resistor went back up
to 0.55 Volts !
So now we know, that the saltmix needs to have some wetness to get the right output.
Just very dry does not work.
So the main power output source of this cell is still a galvanic action.

Then I scrapped all the saltmix and graphite powder off from the alufoil and
mixed it together, so it got a black paste and applied this mixed up NaCl , K2CO3 and
graphite powder mix to a new piece of alufoil.

I again put it there as a small layer and then applied ontop of it the graphite
plate for a current pickup electrode plate.

The open circuit voltage was 1.1 Volts and with a 100 Ohm Load
resistor the voltage went down to 0.52 Volts.
Now after about 6 hours the voltage at the 100 Ohm load resistor is down
to 0.3 Volts and the mix has already a bit dried at the surface, but is still
wet a bit deeper.

So I will let this run again during the night and see how it will be tommorow.

Regards, Stefan.

[betajim]

Hi Stefan,

Hmm, strange, maybe we have today a high X-Ray output of the sun
as these cells tend to follow the X-Ray output of the sun.

Your experiments with this cell are interesting, but I highly doubt that it is affected
by solar x-rays. The reason is that x-rays can't penetrate the atmosphere! From your
description of the cell, my bet is that changes in humidity cause the effects you're
seeing.

Take care.