Sciencemadness Discussion Board

Iron disulfide (AKA synthetic pyrite)

deadrush - 9-2-2025 at 15:25

So I took apart a lithium battery, mostly out of nostalgia, and now I have a black, iron disulfide electrode. A wire mesh of some type is embedded inside the FeS2.

Anyone have any ideas or uses?

Also I kept, washed and cleaned the clear polymer diaphragm. I can't think of how I'd go about using a very long, narrow diaphragm but I'd love to be wrong.

bnull - 10-2-2025 at 06:46

You can make a micro-scale electrolytic cell with the diaphragm. Cut the side of a PP vial, for example, and glue the membrane in the hole. I don't know what is the chemical resistance of the thing but, well, it may serve for some acid-base separation, or even chlorate (who knows).

Edit: Grammar issues.

[Edited on 10-2-2025 by bnull]