HODINFO is a collaborative think tank. We are an International group comprised of inventors, scientist, mechanics, tinkerers, fabricators, and out of the box thinkers. Our mission is to find innovative solutions to the problems that primarily limit the production and delivery of H2. As the world wakes up to the idea of using hydrogen it also becomes clear that immense infrastructure initiatives will be required to make it happen. If adequate solutions can be found to support HOD systems then the world can remove great and costly limitations on future applications. It is important to realize that the future is not just Hydrogen, it's Hydrogen-on-Demand.

I've done a lot of testing in the last 2 years, with a tubular cell, starting with a tube pair, then 3 tubes, on 12V and I've always ended up with corrosion and brown water after a few months. I was using distilled water and KOH only.

I now switched to a drycell with 5 neutral and have solved the corrosion problem so far..

I was wondering what is the main factor for corrosion, is it the voltage between the plates, or power VS surface area, assuming we're only using distilled water and KOH / NaOH..?

I supposed it is both, but wich one is the greatest contributer?

I'm trying to figure this out because I'd like to build a circulating cell, with only 2 tubes, that is 12V between the tubes. The smaller the gap, the higher the voltage, the least electrolyte is needed to do the same amount of gas. And, it creates a more ionized , more powerful gas with higher voltage ( 12v ) between the electrodes.. At least that's my assumption.. 

The only problem with 12V between the plates is that it can ( and will ) create corrosion and heat. 

It CAN be OK IF:

-Corrosion is not too much

-Electrolyte is circulated and filtered

-Water volume is large enough to compensate for heating, or a heat exchanger is added.

Circulating the electrolyte allows for the creation of a large amount of gas with a small volume of active electrolyte; ie the volume between the electrodes, because the gas forming is quickly evacuated from the active electrode volume. This way, electrode surfaces are always actives, because always wet, even with a very small gap between the electrodes. 

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