FIELD: electricity.
SUBSTANCE: cathode device comprises a cathode unit based on carbon and/or graphite, in which, at least, one groove is made, extending in the longitudinal direction of the cathode unit and having a variable depth along the cathode unit, which houses a tyre, wherein an intermediate space between the tire and the bottom of the groove of a variable depth is, at least, partially filled with steel selected from the group with a low content of carbon, silicon, and phosphorus.
EFFECT: uniform vertical current distribution along the length of the cathode unit during the operation of the electrolyser.
9 cl, 1 dwg
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