No suitable material, there is no finished product. Want to know 1mA/cm3 surface currents, is low?

What do you mean, "No suitable material, there is no finished product?"

 

1mA/cm3 is not current per surface, but current per volume.

 

I do not know what to expect from a Cu Fe cell, even if you have an appropriate electrolyte. But, Cu and Fe will not make a very powerful cell.

This battery continuous discharge time is long, electrolyte copper, iron corrosion is very small, there is no short circuit discharge bubbles

This battery continuous discharge time is long, electrolyte copper, iron corrosion is very small, there is no short circuit discharge bubbles

Bubbles insulate the electrodes, rather than cause a short circuit.

 

 

Baghdad Battery

Copper and iron form an electrochemical couple, so that, in the presence of any electrolyte, an electric potential (voltage) will be produced. This is not a very efficient battery as gas is evolved at an electrode, the bubbles forming a partial insulation of the electrode so that although several volts can be produced in theory by connecting them in series, their internal resistance from the formation of the gas bubbles becomes so great that it severely limits the electrical current that can be produced from such a simple wet cell.