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Re: (ET) Alum+h2o replacement for acid in lead batteries



robert winfield wrote:
i would be quite careful here folks

NaOH + Al + H20 ==> free H2 + very basic ph solution
in a vigerous exothermic rxn

That would be a lot of energy...

Seriously, someone can fiddle with this but I don't think it's something to do to your elec-trak tomorrow. Nickel Cadmium batteries and Nickel Iron are different from Pb batteries in more ways than simply electrolyte. It has to do with how ions are transferred between the plates than a straight chemical reaction.

Chris