Resident,
You're wasting your time on this design and will waste a lot of money building an expensive prototype if you try it. I recommend first building a FREE 3 minute test aparatus to prove to you why it's a flawed idea.
You just need 3 paper-clips and a 9v battery. Connect one paper-clip to each of your battery terminals (use anything like aligator clips or plain wire to do this). Now take a small piece of wax or a wad of chewing gum ...something non-conductive and push your paper clips into the medium a little bit so they are held securely about 1/4 inch apart. Now in between them put your 3rd paper-clip. Your paper-clips are now 1/8th inch apart from each other and you have replicated identically your cell design. You've more importantly done this in about 5 minutes for FREE.
It always amazes me how people propose stuff and then can't take the extra 10 seconds to test it themselves. They come to the conclusion that they simply can't replicate or test their design because they don't have money or equipment to do so. What they fail to remember is that there are MANY ways to test something if they just put an ounce of creative thinking into the problem.
I hope this little test does 2 things. 1: shows you that your design will not work as you had hoped. 2: shows you that you probably have the means to do real science if you just think creatively.
Hell thinking creatively and coming up with unique solutions to difficult problems is what I LIVE FOR!!! -Dude that's the whole point of basement workshops! To do something that others never believed could be done in one's home with simple equipment. Come on now!
I've been trying to get people to think outside of the box for years now. I guess it's easier to speculate and theorize without getting your hands dirty, then it is to break out the chewing gum and paper-clips.
I will leave you to describe to the group WHY this design fails to perform as you expected. I could do that for you but it would take the fun out of you seeing the results of your design for yourself.
You've been given a key, are you going to use it and get your hands a little dirty (sticky)? Please let us know what you find.
Chemelec aparently needs to hear the results of this as well since he's convinced it will work
Oh and for the quick answer on how I KNOW it will fail... I tried it myself long ago

Except I took it a step further and was testing to see if a neutral center plate (or plates) would increase a submerged cell's efficiency.