I will be sealing up with wax my 18 count panel later in the evening today.The six cells in front I was worried about due to leaks are still around 1.45 volts each.I am worried about too much water in the cells.I could wait till monday or later?triffid






Remember I sealed five cells after just 36 hours?I wonder now if that was too soon?


Also I need to reveal that in making my cells in a panel that i use three sprinkles of salt sub not just two.And more glue to cover the vitamin C on top of the epson salts and the second sprinkle of salt sub.And the third and final sprinkle of salt sub on top of everything.Stick the electrodes in and set aside to dry.No testing until dry at least 12 hours later.Gives the electrodes time to stiffen in the glue.

Quote from: triffid on February 19, 2012, 12:37:02 PM
I will be sealing up with wax my 18 count panel later in the evening today.The six cells in front I was worried about due to leaks are still around 1.45 volts each.I am worried about too much water in the cells.I could wait till monday or later?triffid
Remember I sealed five cells after just 36 hours?I wonder now if that was too soon?
Also I need to reveal that in making my cells in a panel that i use three sprinkles of salt sub not just two.And more glue to cover the vitamin C on top of the epson salts and the second sprinkle of salt sub.And the third and final sprinkle of salt sub on top of everything.Stick the electrodes in and set aside to dry.No testing until dry at least 12 hours later.Gives the electrodes time to stiffen in the glue.

Three days seems reasonable (to me anyways...) as long as the entire cell isn't too thick. Have you tried the paper style egg cartons? They would absorb any extra H2O probably?
Happy experimenting,
PC

happy b-day phi!

NASA supposly did some experiments in the 60's with gallium as a negative electrode for a battery. Gallium seems to be good but I won't know until i get some. Its not cheap so i got 15 grams for $25 so that i can play with it. Its cool stuff and its a semiconductor too! And it also has a low melting point, it will melt in your hands.


I've also found that if you coat your magnesium or aluminum electrode with petroleum jelly it will help to cut down on corrosion.


I'm going to see if i can get my hands on some vitamin C. Do they sell it in pill form or should i get some oranges? Or is there something better?

Quote from: ibpointless2 on February 19, 2012, 10:28:44 PM
NASA supposly did some experiments in the 60's with gallium as a negative electrode for a battery. Gallium seems to be good but I won't know until i get some. Its not cheap so i got 15 grams for $25 so that i can play with it. Its cool stuff and its a semiconductor too! And it also has a low melting point, it will melt in your hands.
I've also found that if you coat your magnesium or aluminum electrode with petroleum jelly it will help to cut down on corrosion.
I'm going to see if i can get my hands on some vitamin C. Do they sell it in pill form or should i get some oranges? Or is there something better?

Gallium seems kind of exotic LOL!!! Way cool though IB. Definitely make a vid or something when you use that stuff... What are you going to use it with BTW?
I got 25 vitamin c tablets for a dollar (dollar store) but I'm sure you can find them cheaper. Probably available in a bulk powder somewhere...
Plengo 'treats' his magnesium slugs with a borax/H2O bath that seems to put a protective layer over them that prohibits corrosion. You might wanna check out his videos if you haven't already...
I bought an Oscilloscope today on ebay (WOOT!!!!) for $50.95 AFTER shipping... Can't wait to put some of these cells on a scope... And I found an old analog tester which will be another nice thing to have... Both together came out to within a dollar of my birthday money!
Anyhow, I didn't get a chance to make any cells today. My 'saltsub container cells' that just contain epsom salt and Durham's for the electrolyte (the ones I tried charging a few times) seem to stabilize at around 1.3v (probably lower, I haven't left either connected for any long term measurements) and around 0.6v (ouch). Ah well, maybe I will get some time tomorrow to make more vitamin c and aspirin cells with higher mix ratios.
Til then, happy experimenting!
PC