alcohol powered fuelcell -- demo vehicle and a single stack (1W)

[hartiberlin]

...the alcohol can be anything between whiskey and rum )

Does clear transparent  40 % Vodka also work ?
What must be the ethanol concentration in the cell ?

Many thanks.

Regards, Stefan.

[hartiberlin]

.....correct, the membrane topic is one of the issues to optimize. Concerning the GDL you could simply take some graphit and make a thin film on the electrode.

Okay, I have graphite electrode like graphite paper or graphite plates made with a acrylic binder.

What film should I put on there best ?
Some nickel metal film or maganese or silver or something simular ?

What have you tried already and what works best ?

Many thanks.

[hartiberlin]

And what akaline concentration must be inside the cell ?

Is water-NaOH or
water - KOH
better for the alkaline solution ?

Many thanks.

[fuelzell]

well, I've done the the following:

stainless steel-cathode/GDL--in your case graphit//catalyst: carbon/Nickel(II)-chlorid - mix
Anion-Exchange Membrane
Titan-Zinc-anode//catalyst:Vanadium(V)-oxid/Fer/carbon - mix

Apply water to the cathode-catalyst
Apply ethanol to the anode-catalyst -- later add NaOH and it will make a significant difference

Using the GDL I had 1....1.4V per stack

cheers Frank