CATHODE FOR ELECTROCHEMICAL HYDROGEN GENERATION, AND METHOD FOR ITS MANUFACTURE Russian patent published in 2015 - IPC B22F3/105 C25B1/02 C25B11/00 B82Y30/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, and namely to cathode materials based on nanocrystalline Fe-Ni particles. A cathode for electrochemical hydrogen generation is made in the form of a steel substrate with a nanocomposite Fe-Ni coating applied onto its surface. The Fe-Ni coating with Ni content of 3-10 wt % has thickness of 0.5-0.9 mm and average grain size of up to 40 nm. A manufacturing method of a cathode for electrochemical hydrogen generation is characterised by the fact that a mechano-activated Fe-Ni powder nanocomposition with Ni content of 3-10 wt % is prepared and applied layer-by-layer onto the steel substrate, and layer-by-layer laser sintering is performed. Laser sintering is performed in vacuum with a fibre-optic pulse ytterbium laser at pulse generation frequency of 20000-100000 Hz and one-pulse time of 100 ns.

EFFECT: produced cathode is characterised by reduced hydrogen overvoltage.

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