I've always heard when you put copper and aluminum together you get a battery, as in flowing current, especially if there is a conducting fluid handy, say like rain! I know for sure it is why you can't use copper bottom paint on an aluminum boat. Before I would proceed, I would definitely consult a qualified chemist or metallurgist. Just my .02!
I do know that copper coated wire is widely available, and I'm not sure why it doesn't have a short life, the copper causing the aluminum to corrode. It could be there is no electrolyte present.
I found this quote on a solar collector site:
Q. Do Sun Ray Solar Copper Aluminum absorber plates corrode?
A. Generally the dissimilar metals have a different electric charge, in this case copper, a noble metal with a positive charge (cathode), and aluminum, a less noble metal, with a negative charge (anode). If the two materials are in contact with a corrosive electrolyte like the water in car battery, corrosion will occur (read "increase") on the least noble material, the aluminum (anode) and decrease on the noblest metal, the copper (cathode). Similar to an anode rod in a water heater. This corrosion is called galvanic corrosion.