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C

Cathode lining

The carbonaceous negative electrode that is also used for containing the metal and the electrolyte.

Conductors

Materials that are made up of atoms whose electrons are easily freed.

Crust

The solidified electrolyte-alumina power that forms on top of the pot.

Current effeciency

The ratio of the quantity of metal produced in the pot by passing of current compared to that of the theoretical amount expected from Faraday's Law. Expressed as a percentage.