Abstract: An active layer/membrane assembly to be incorporated into a hydrogen production device comprises an active layer in contact with a membrane capable of exchanging ions, the active layer comprising catalyst particles and particles referred to as support particles, wherein the size of the support particles is greater than the thickness of the active layer, so that the support particles emerge from the active layer, at the surface opposite the surface in contact with the membrane. A unit comprising the assembly and a porous current collector, the assembly and the collector having a complementarity of surface finish is provided. A process for manufacturing the assembly is also provided.

Abstract: An active layer/membrane assembly to be incorporated into a hydrogen production device comprises an active layer in contact with a membrane capable of exchanging ions, the active layer comprising catalyst particles and particles referred to as support particles, wherein the size of the support particles is greater than the thickness of the active layer, so that the support particles emerge from the active layer, at the surface opposite the surface in contact with the membrane. A unit comprising the assembly and a porous current collector, the assembly and the collector having a complementarity of surface finish is provided. A process for manufacturing the assembly is also provided.

Abstract: A catalytic cathode, intended for a lithium-air battery comprising catalytic particles supported on electron-conducting particles, comprises a first face intended to be in contact with an ion-conducting material and a second face intended to be in contact with atmospheric oxygen, and comprises at least: a first catalytic layer intended to be in contact with the ion-conducting material, and; a second catalytic layer intended to be in contact with atmospheric oxygen, characterized in that: said first layer comprises first entities of catalytic particles promoting the reaction for the oxidation of lithium-based products, said entities being based on cobalt or on nickel; said second catalytic layer comprises second entities of catalytic particles promoting the reaction for the reduction of oxygen, said second entities being based on manganese or on silver or on platinum. A lithium-air battery comprising the cathode is also provided.