<P> Commercially, electrolytic cells are used in electrorefining and electrowinning of several non-ferrous metals . Almost all high - purity aluminium, copper, zinc and lead is produced industrially in electrolytic cells . </P> <Ul> <Li> Concentration cell </Li> <Li> Electrochemical cell </Li> <Li> Galvanic cell </Li> </Ul>

What is the purpose of the battery in this electrolytic cell