PEM Fuel Cells

[Muzzwezz]

Hi

I am making a PEM fuel cell and am using a 10cm * 10cm Nafion 112 membrane,

However I am having trouble with electrodes, please can you advise me what materials I can use as electrodes?

Platinum is too expensive, I hear carbon is second best but as I’m short on time is there any other material I can use too that’s more available?

Also

What voltage should I use to charge my PEM?

Many thanks

Dominic

[silverslith]

Originally Posted by Muzzwezz

Hi

I am making a PEM fuel cell and am using a 10cm * 10cm Nafion 112 membrane,

However I am having trouble with electrodes, please can you advise me what materials I can use as electrodes?

Platinum is too expensive, I hear carbon is second best but as I’m short on time is there any other material I can use too that’s more available?

Also

What voltage should I use to charge my PEM?

Many thanks

Dominic

I used to pull apart batteries for their carbon electrodes. Not sure if they still make them with those though. Real cheap no-name brands probably do.

[UncleAl]

Start by reading about water fuel cells,

Physics Today 59(10) 38 (2006)

You need a platinum group catalyst, typically dispersed on carbon or electrolessly plated. If you do not have catalyst bed porosity, how do reactants get into the fuel cell?

[Muzzwezz]

thanks for the replies,

"You need a platinum group catalyst"

so nickel or uranium them?

"If you do not have catalyst bed porosity, how do reactants get into the fuel cell?" - i have no idea what that means, however heres a CG pic



based on PIC:
http://i12.photobucket.com/albums/a2...z/IM000191.jpg