Perpetual batteries from Vasilescu-Karpen

[profitis]

Sorry.slight mistake: ANODE: 4OH- > O2 + 2H2O  + 4e- CATHODE: O2 + 2H2O + 4e- > 4OH-

[mscoffman]

profitis, rather than pyrolucite which is a natural mineral, would not it make more sense to use high purity EDM.

And why not put the EDM on a pure manganese wire grid mesh, turns out that they make that, lets say with the
**O2 method of using a MnO2 paste? Happen to know of any good binders than would allow the porosity necessary
to allow required access to the MnO2 while holding it to the mesh? This would allow nice big cell plates to be constructed
right off the bat.  How about some silver/indium silver bearing solder for connecting the electrical leads to the plates?

:S:MarkSCoffman

[profitis]

It can be electrodeposited onto titanium sheet http://link.springer.com/article/10.1007%2fbf01092606 which at the same time passivates the titanium.it can also be deposited onto titanium via pyrolysis(heating) of a solution of Mn(NO3)2 spread ontop the sheet which decomposes straight into MnO2 and NO2 gas.I don't know if I can trust passivity of deposition onto manganese metal but its worth a try.electrodeposition onto manganese metal in alkaline solution is very easy,just caustic soda solution is all that is needed with manganese sheet as anode,carbon as cathode.

[profitis]

Its best to use solid slices pyrolusite rock because this will give greatest voltage disparity.impurities in pyrolusite won't cause a problem(silicates,Fe2O3,) so it is ok for use.check out the conductivity of pyrolusite http://www.researchgate.net/publication/226542715_study_of_the_semi-conducting_properties_of_pyrolusite

[profitis]

If you build a big one please show it here @markscoffman because I haven't built anything beyond bottlesize cap.by the looks of the current(30microamp) at the top of a discharge burst shown here in this snapshot it is capable of quite a punch.the blackened nickel here is only about 0.5cm2 and the MnO2 is 3mmx2mm (from a tantalum cap).indium-silver solder  under alkaline conditions I'm not sure about.check to see if it affects voltage negatively.nichrome wire used minimaly is okdoke.