FIELD: physics.
SUBSTANCE: invention relates to a cathode unit and a cathode of an aluminium electrolytic cell. Cathode unit for aluminium electrolytic cell comprises a main layer of graphite and located on upper layer made from carbon composite material containing from 15 to less than 50 wt% of solid material with fusion temperature of at least 1000°C and with thickness from 50 to 400 mcm. Also disclosed is a cathode containing said cathode unit, and use of said cathode for electrolysis of metal, in particular aluminium.
EFFECT: longer service life of cathode unit and cathode.
21 cl, 1 dwg
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