Graphite-Paper - Aluminium-Foil galvanic cell with 1.7 to 1.92 Volts

[hartiberlin]

Hi ResinRat,
it seems to depend on how concentrated the NaOH is inside the water.
If you make it not too concentrated then the Alufoil will
not consume so fast.
I have to experiment more with the concentrations.
Also it seemed, when the NaOH concentration was too high,
the voltage dropped and Hydrogen gas bubbles formed on the alufoil.

[hartiberlin]

Hi Jerry,
normally you need 2 dissimular metals to get a voltage
potential between the electrodes.

But charcoal is not a good conductor.
YOu will probably get about 01. to 0.2 Volts from
graphite versus charcoal, but the current output is very weak.

The current output in my cell could be boosted
via a Stainless steel mesh put inside the graphite-acrylic
mix.
This was also done in the Zinc Air battery and helped to get the
huge output. Then the inner resistance of the graphite electrode
will not be KiloOhms , but Ohms and then you will
get much higher currents.

This I will also try next.

Regards, Stefan.

[hartiberlin]

Okay Folks,
here are the 4 other videos I made yeasterday.

http://www.youtube.com/watch?v=FbANg9E5EnI

http://www.youtube.com/watch?v=vxxiyUA7JwM

http://www.youtube.com/watch?v=45a7fZUsNyY

http://www.youtube.com/watch?v=mWKG_6QPLsA

All now also  in 720p HD available.

Enjoy !

Regards, Stefan.

[hartiberlin]

I made today a few new electrodes with graphite powder, lampblack powder and
Pottassium Permanganat ( KMnO4) and the acrylic binder and put this onto
stainless steel mesh and onto another mesh, an Aluminium wire mesh.

It is still drying and tommorow I will do my first tests with it.

Stay tuned.

Regards, Stefan.

[hartiberlin]

These are my new Metal mesh-graphite-KmnO4 test electrode materials.

See the attached pics.

Will do the experiment tommorow, when I have daylight.

Regards, Stefan.