Any experts on galvanic corrosion/batteries in general?
I know how a rechargeable battery works in theory.
You have two metals, you exchange ions between them, you know the drill.
But what I failed to find is an answer to is this:
what -exactly- causes wear of the anode or the battery, lets say an lithium-ion-battery in general? Like I get the concept of batteries "wearing" out, but what exactly happens? If I add electric current to it the ions taken from the anode return to the cathode. Where is the loss? Do some ions vanish into nothingness? Are the "free spots" on the anode taken by any other stuff? I mean unless its leaking it should be an enclosed environment and if you add the energy it should, in theory, fully restore? Is there some irreversible chemical process happening that hinders the anode to fully grow back?