Re: [Phys-l] About Zinc-Copper battery

[brian whatcott <betwys1@sbcglobal.net>]

 Internet accounts of Daniell style cells are notably weak on power and 
current detail. I encountered one report
citing 0.1 amp / square inch of electrode, using a KOH electrolyte and a 
rotating scrubbed electrode.
The classical electrolytes are copper/zinc sulfates separated by a 
permeable barrier or salt bridge.
I imagine your electrolyte may be subject to gassing or plating out.
Available ampere hours are a function of plate area, electrolyte 
molarity, temperature etc.

Brian W

On 10/22/2010 8:07 AM, CARABAJAL PEREZ, MARCIAL ROBERTO wrote:
> Hello:
>
> I am working in a laboratory practice, analyzing the basic battery cell constructed with copper and zinc electrodes,  submerged in an acid electrolyte (like vinegar). I need to relate the area of the electrodes with the acidic environment (and probably temperature) in order to determine which dimensions would be necessary to obtain such a constant current of 10 mA within an acceptable decline (10%) of the terminal voltage (for a few minutes). Please, I would appreciate information about this topic, in such a way to determine if it is possible (convenient)  to built this didactical device.
>
> My best regards.
> Roberto