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Battery school project assistance

  1. Nov 22, 2014 #1
    Hello everyone!

    I'm almost done with a project of mine and I'm creating a battery with an aluminum casing around. Inside I have a copper electrode (cathode) and due to lack of finding a correct dimension I have to resort to using a stainless steel anode (and I'm also running out of time)

    So I figured since the active materials that will react in this galvanic set up will be copper and aluminum, I tried to figure something out where I can somehow only make the copper and stainless steel be the only two to react

    (I can't replace the aluminum housing because it is the only one available to me, and right one for the components and dimensions involved)

    Are there coatings or polymers that I can using to cover up the inside of the housing that will make the sulfuric acid not contact the aluminum?

    In this video this man build a battery from stainless steel kitchen knifes and he got decent voltage out of it, and I don't really care at this point how much voltage I can produce from the small electrode difference potential between the copper and stainless steel.

    Would I have to paste some lead oxide on the stainless steel plate (anode) or alum? If so would I also need to put a separator over the stainless steel plate just so that the oxide remains intact to the place?
    (so that when I drown the plates in a sulfuric acid solution, the paste wont wash away)
  2. jcsd
  3. Nov 24, 2014 #2


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    Staff: Mentor

    A good electric insulation of the aluminium (relative to the other parts) could help.
    Direct containers... well glass would work. Or replace a part of your housing with more steel. Some types of plastics can work as well.
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