Membrane for Electrolytic cell

May be Nafion?

Nafion will let electrons through in one direction but not the other. Also, these are pretty much used only in fuel cells... And they ain't cheap!

There's no right or wrong vision.

Your vision is what you beleive and what you want.That means it is best created with your own teams.The two-day golfing retreat for senior management is fast becoming a thing of the past .Rely on yourself and your own people ,not external experts.

Fab,

Membranes can work by two mechanisms; Permeation and diffusion. A permeation membrane is solid (no holes) and gases basically dissolve in the membrane on one side and evaporate on the other. Examples can be found here:

http://www.sspinc.com/prodspecs/ssp-m213.cfm

They carry dimethyl silicone and other membrane materials.

In diffusion membranes, there are tiny holes through which gases can pass. If the membrane material is hydrophobic, they can allow gas to diffuse, but block liquids. You could look at Goretex and Tyvek.

Tad

Thanks TAD

most helpful guiding me to website,a new problem arises as the permeation of a hydroxide gas has the ability to convert back to H2O.if this gas is compressed would this resist the change.

FAB4440.

... a new problem arises as the permeation of a hydroxide gas has the ability to convert back to H2O ...

I don't mean to knit-pick, but now that I see the term "hydroxide gas" appear a second time in this thread, as a chemist I would really like to know what it means. The first time I saw that term here, I assumed it was a typo that should have read "hydrogen gas" or "hydroxy gas" (the latter being slang for a mixture of hydrogen and oxygen gases). Please explain.

It should read exactly as you said,due to recent surgery and the mind numbing pills" cut me a little slack."

Would you have any answers regarding the conditions of "hydroxy gas" regenerating to H2O, and using the method of compression does this solve such a problem.

if you can answer this i have another quest?

thanks FAB4440

I would gladly try to help -- electrolytic and fuel cells interest me very much. But first I need some clarification. Do you intend to electrolyze water and then use the gas to provide thrust for propulsion? I can see how this might work for a toy boat or submarine, but not for full-scale ships. Maybe I misunderstood. Or do you want to supply hydrogen gas to a fuel cell? (perhaps to power an electric motor attached to a propeller?) Your mention of gas diffusing through a membrane makes me think of a fuel cell. After we clear up my confusion, we can brain-storm about possible configurations to deal with cell orientation issues.

"As there is an open channel inlet for the water there has to be enough pressure head behind water to force gas through membrane,"

Can you provide a pump on the inlet to provide the additional pressure? Need more information about what you are trying to do.

Dear Guest?

That is a valued point and have thought to use a hydro pump (water & gas)that can be found in commercial spa baths the water inlet is directed to pump (water in) then pumped under pressure (water output)to electrolytic cell.There could be a problem with the required pressure for head of water in cell.The use of a minature pressure valve in between the pump & electrolytic cell to release excessive water & use this excess water as means of propulsion, should solve this problem have not done the maths as yet to confirm this.The use of the gas (input-output) is for the pressurised release of gas for jet propulsion.Also will have to convert pump to seperate output of water to direct to electrolytic cell.Have been under the surgeon scalpel so been a bit out of touch recently.If the above sounds plausable would appreciate feed back.

thanks

FAB4440