METHOD OF MAKING ELECTRODE FOR ELECTROCATALYSIS Russian patent published in 2025 - IPC C25B11/00 C25B11/51 C25B11/31 C25B11/73 C25B11/77 C25B11/81 C25B1/00 C25B1/04 

FIELD: physics; chemistry.

SUBSTANCE: present invention relates to a method of making an electrode suitable for electrocatalysis, which contains an electrocatalytically active material, in particular an anode for alkaline hydrolysis of water. Method of making an electrode suitable for electrocatalysis, containing an electrocatalytically active material consisting essentially of undoped or doped metal oxides or mixtures thereof with one or more of metal sulphides, metal sulphites, metal sulphates, metal phosphates, metal phosphites and metal phosphides, includes the following steps: (a) providing an electrode-suitable substrate comprising an electronically conductive material; (b) providing a precursor mixture containing at least (i) a metal nitrate salt source M and (ii) a fuel component suitable for solution combustion synthesis; (c) transferring to the electronically conductive substrate material of step (a) the precursor mixture of step (b) to obtain an electrode precursor; (d) heating the electrode precursor obtained in step (c) at a temperature high enough to cause self-ignition of the transferred precursor mixture; wherein the substrate of step (a) is such that the electronically conductive material is stable at the temperature of step (d); molar ratio of the fuel component to the nitrate anion in the precursor mixture of step (b) is such that it provides substantially the formation of an electrocatalytically active material during the combustion step of step (d); and wherein, when the electrocatalytically active electrode material contains one or more of metal sulphides, metal sulphites and metal sulphates, the precursor mixture of step (b) further comprises a sulphur source, and/or the fuel component of the precursor mixture contains a sulphur atom in its molecular formula; when electrocatalytically active electrode material contains one or more of metal phosphates, metal phosphites and metal phosphides, the precursor mixture of step (b) further comprises a phosphorus source. Invention also relates to an electrode obtained using the method according to the invention, a device comprising one or more said electrodes, and use of the electrode in methods for electrocatalytic oxidation.

EFFECT: manufacturing of an electrode with control with parameters determining the morphology and characteristics of the active material.

17 cl, 8 dwg, 5 tbl, 3 ex