Substitute for proton exchange membrane NAFION 117

I have personally visited researchers at Case western Reserve and the canadian national research council Institute for fuel cell innovation, and they have not found a substitute for a proton exchange membrane in their room temperature aqueous fuekl cells.

You cover a lot of territory with your 'basically a proton exchange membrane' comment.

It needs to let protons through, but not electrons (must be insulator) or no electricity will flow... the way we'd like it too. presuming dilasys is dialysis- why would you think that that would let protons through? it lets whole molecules through. gap size too big. (fuel cell wants to pass protons,dialysis membrane passes sodium ions etc. much larger. the accumulatoion of such would probably stop reaction.) disclaimer, I don't work on them, only research about them.)

Its expensive because of platinum and the engineering of getting the membrane right.

Dialysis membranes are 'basically' theres that word again cellulosic polymers, the size of the gaps permits diffusion of various species. It is semi permeable and 'suction' as it were is driven by concentration gradient on either side of the barrier.

Good luck with your project, not sure you'll get protons through the

Good luck on finding a substitute. Every one on the planet will be grateful if you do.

milo

Thanks a lot for your advice,but could the membrane used in reverse osmosis plants be useful?

Electrodialysis uses special membranes that will either allow positively-charged cations but not negatively-charged anions to pass through, or vice versa. Of course, you need to combine the membranes with a high voltage DC source. You have to use the ED stack as a whole unit. I'm not sure if this is what you have in mind, but I assume that you actually mean to separate cations from anions when you say you need to separate protons.

Hi have u succeeded in making the microbial fuel cell? have u used the proton exchange membrane or have made asingle chambered one? Reply me if u have done, my mail id is april8791@gmail.com.