CATHODE FOR ELECTROLYSIS AND THE METHOD OF ITS MANUFACTURE AND ELECTROLYTIC CELL FOR ELECTROLYSIS Russian patent published in 2018 - IPC C25B11/08 C25B11/04 C25B1/06 

FIELD: electrical engineering.

SUBSTANCE: invention relates to a cathode for electrolysis comprising a conductive substrate and a catalyst layer on this substrate containing ruthenium. In this layer of catalyst, when measured by X-ray photoelectron spectroscopy, the ratio of the maximum intensity of the ruthenium peak 3d 5/2, arising between 281.4 eV and 282.4 eV, to the maximum intensity of the ruthenium peak 3d 5/2, arising between 280.0 eV and 281.0 eV, is 0.45 or more. Catalyst layer comprises: as a second component, at least one or more elements selected from the group: neodymium, promethium, samarium, europium, gadolinium, terbium and dysprosium; as a third component, at least one or more elements selected from the group: manganese, iron, cobalt, zinc, gallium, sulfur and lead, amount of the element(s) of the second component being 0.01 moles or more and less than 1 mole relative to 1 mole of ruthenium, and the amount of the element(s) of the third component is 0.01 mole or more and less than 1 mole relative to 1 mole of ruthenium. Invention also relates to an electrolytic cell and a method for manufacturing a cathode.

EFFECT: cathode has a low hydrogen overvoltage and resistance to reverse current when electrolysis stops.

13 cl, 17 ex, 2 tbl, 10 dwg