Originally posted by NickZ
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This is what I've been trying to do. I've tried everything from honey to bug spray and even human spit too and everything in-between. So far I can say that its hard to beat water but I have something that can help to protect the metal. Adding petroleum jelly to the magnesium electrode first can help to protect the magnesium. Its not perfect but it does help.
The hunt for a liquid that's like water but not water is a hard thing to find. But it did lead me to something NASA was working on in the 60's. NASA was looking at gallium as a negative electrode for batteries, this seems very interesting as gallium is a semiconductor. The only problem with gallium that I would know of is its expensive. Also gallium has a low melting point, it can melt in you hand, so if it does corrode just melt it to recombine with itself again.
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