Method for depositing a material layer on a metallic interconnector or support for fuel cells or cells for electrolysis, comprising the following steps of: - preparing at least one surface of a metallic interconnector or support; - preparing a digital apparatus for inkjet printing; - preparing at least one digital image to be printed on said metallic interconnector or support; - printing, by means of said digital apparatus, said at least one image on said at least one surface (1a, 1b) of said metallic interconnector by applying at least one layer of ink with ceramic and/or metal material base on such surface (1a, 1b); - evaporating the solvent of the ink applied during the printing step, or allowing such solvent to evaporate; - heating said printed metallic interconnector, so as to remove the organic part of the ink and allow the adhesion of the material layer on the metallic support, wherein said interconnector comprises a first side or first surface or anode set to come into contact, during use, at a respective intermediate portion (1d1) with the fuel and a second side or second surface (1b, 1e1) set to come into contact, during use, with air, said interconnector also comprising an intermediate portion (1d1, 1d2) and an edge portion (1e1, 1e2) extended around said intermediate portion (1d1, 1d2), the edge portion (1e1, 1e2) having edge zones in which through slots or holes are delimited, and wherein the zone of said first side belonging to the intermediate portion (1d1) comprises a contact area on which, during use, the fuel cell is positioned on the side exposed to the fuel, such contact area having the function of electrically connecting the fuel-electrode to the interconnector and of collecting the current generated by the oxidation reaction of the fuel in the respective cell, and wherein said printing step is conducted by applying a glass-ceramic or refractory insulating layer at the perimeter of said contact area and subsequently, on top of such glass-ceramic or refractory insulating layer, a cord or layer of sealant is applied. - preparing at least one surface of a metallic interconnector or support; - preparing a digital apparatus for inkjet printing; - preparing at least one digital image to be printed on said metallic interconnector or support; - printing, by means of said digital apparatus, said at least one image on said at least one surface (1a, 1b) of said metallic interconnector by applying at least one layer of ink with ceramic and/or metal material base on such surface (1a, 1b); - evaporating the solvent of the ink applied during the printing step, or allowing such solvent to evaporate; - heating said printed metallic interconnector, so as to remove the organic part of the ink and allow the adhesion of the material layer on the metallic support, wherein said interconnector comprises a first side or first surface or anode set to come into contact, during use, at a respective intermediate portion (1d1) with the fuel and a second side or second surface (1b, 1e1) set to come into contact, during use, with air, said interconnector also comprising an intermediate portion (1d1, 1d2) and an edge portion (1e1, 1e2) extended around said intermediate portion (1d1, 1d2), the edge portion (1e1, 1e2) having edge zones in which through slots or holes are delimited, and wherein the zone of said first side belonging to the intermediate portion (1d1) comprises a contact area on which, during use, the fuel cell is positioned on the side exposed to the fuel, such contact area having the function of electrically connecting the fuel-electrode to the interconnector and of collecting the current generated by the oxidation reaction of the fuel in the respective cell, and wherein said printing step is conducted by applying a glass-ceramic or refractory insulating layer at the perimeter of said contact area and subsequently, on top of such glass-ceramic or refractory insulating layer, a cord or layer of sealant is applied.