Simple Chemical Trick To Boost Battery Efficiency 149
space_mongoose writes "Hitachi thinks that a simple chemical additive could significantly improve battery life. Alkaline batteries have a positive electrode of manganese oxide and a negative electrode of finely powdered zinc, but zinc oxide forms around these grains of zinc. Hitachi's solution is to replace the zinc with a fine powder of zinc-aluminum alloy, displacing the zinc within the zinc oxide layer making it a much better conductor."
Cost-efficiency? (Score:1, Interesting)
Or maybe it's because this shit makes it more expensive than it would be to just replace the batteries more often?
Peak current, yes - Extra life, not so much (Score:4, Interesting)
Re:Incremental Changes (Score:2, Interesting)
Re:Costs? (Score:4, Interesting)
Just my 2 cents.
So riddle me this (Score:1, Interesting)
Dire warnings and seventy-six versions of the same piggin thing with no real identifiable difference (so you have to hunt for the right one in the drawer) or ignore their prediction and stick a generic 6V wall-wart in it.
So why do they take such varying voltage in the battery but not the wall-wart?
Re:why (Score:2, Interesting)
Aluminium oxide dissolves in sufficiently strong alkali (it's the method used to prepare aluminium parts for anodizing). I don't know if the electrolyte in the battery is sufficient to do this but that might be the explaination.