Abstract: An assembly including a stack of solid oxide cells of the SOEC/SOFC type and a clamping system for the stack. This assembly furthermore includes at least one heating plate, demountable and interchangeable, inserted in a housing of at least one of the top and bottom clamping plates, the housing being formed in the thickness of the at least one of the top and bottom clamping plates, and comprising first and second opposite ends, at least one of which emerges on the lateral face-of the at least one of the top and bottom clamping plates, being located inside, at a distance from its main top and bottom faces substantially parallel to each other.

Abstract: The invention relates to a method for manufacturing a thermoelectric device equipped with a heat sink, comprising the following steps: A) making (100) a first portion of said thermoelectric device, said first portion being equipped with a heat sink, step A) during which a first series of studs made of a semiconductor material with a given type of doping is deposited by additive manufacturing; B) producing (200) a second portion of the thermoelectric device, step B) during which a second series of studs made of a semiconductor material with another type of doping is deposited by additive manufacturing; C) assembling (300) the second portion of the device to the first portion.

Abstract: An assembly including a stack of solid oxide cells of the SOEC/SOFC type and a clamping system for the stack. This assembly furthermore includes at least one heating plate, demountable and interchangeable, inserted in a housing of at least one of the top and bottom clamping plates, the housing being formed in the thickness of the at least one of the top and bottom clamping plates, and comprising first and second opposite ends, at least one of which emerges on the lateral face-of the at least one of the top and bottom clamping plates, being located inside, at a distance from its main top and bottom faces substantially parallel to each other.

Abstract: The invention relates to an electrochemical device that includes an electrochemical unit. The electrochemical unit includes a stack of SOEC/SOFC-type solid oxides operating at high temperatures, a clamping system provided with two clamping plates, referred to as the first clamping plate and second clamping plate, respectively, between which the stack is clamped, one and/or both of the two clamping plates having at least one gas inlet and at least one gas outlet. The unit includes heating means which are designed to ensure the heating of the electrochemical unit and are integrated into said unit. The device includes a containment box, housed in a volume, referred to as internal volume V, the electrochemical unit, the internal volume V being delimited by a surface, referred to as the internal surface S, of the containment box, which follows the shape of the electrochemical assembly.

Abstract: An electrochemical system includes an electrochemical device having a stack of n solid oxide electrochemical cells, n being an integer greater than or equal to 1. The electrochemical system also includes at least n?1 interconnection plates which are interposed between the electrochemical cells, and means for supplying gas to the electrochemical cells and means for collecting gas produced by the electrochemical cells. The electrochemical system further includes means for electrically connecting the system to the outside. The electrochemical device also includes heating means integrated into the stack, said heating means comprising electrical conductors housed in the clamping plates.

Abstract: A method for manufacturing an aluminium alloy part by additive manufacturing comprising a step during which a layer of a mixture of powders is melted locally and then solidified, wherein the mixture of powders comprises: —first particles—comprising at least 80 wt % of aluminium and up to 20 wt % of one or more additional elements, and —second particles—of yttria, the volume percentage of second particles in the mixture of powders preferably ranging from 0.5% to 5%.

Abstract: A process for manufacturing which comprises the following steps: a) supplying an aluminium alloy particle powder, b) applying a layer of powder to a solid substrate or to an underlying powder layer, c) locally melting the applied powder layer by laser beam scanning, to form a molten bath comprising a first surface in contact with the substrate or the underlying powder layer, d) cooling the molten bath at a cooling rate Vr to solidify it, where zirconium has been added before step c), the zirconium representing at least 0.7% by mass, relative to the total mass of the aluminium alloy, and the cooling rate Vr at the start of solidification at the first surface of the molten bath being: —less than Vrmax=w*9.106-4.106 where w is the percentage by mass of zirconium, and—strictly greater than Vrmin=106 K/s.

Abstract: A method for manufacturing a thermoelectric structure including the following steps: a) providing a substrate made from a first material, b) depositing a thermoelectric element made from a second material on the substrate, by additive manufacturing, preferably by SLS or PBF, c) thinning and cutting the substrate until a film made from the first material is obtained, by means of which a thermoelectric structure comprising a film and the thermoelectric element is obtained.

Abstract: A method for manufacturing a thermoelectric structure including the following steps: a) providing a substrate, covered with a metal layer, b) forming a thermoelectric element on the metal layer, by additive manufacturing, preferably by SLS or PBF, and c) optionally removing the substrate, by means of which a thermoelectric structure, which comprises the metal layer and the thermoelectric element, is obtained.

Abstract: Method for manufacturing an aluminium alloy part by additive manufacturing comprising a step during which a layer of a mixture of powders is locally melted and then solidified, characterised in that the mixture of powders comprises: first particles comprising at least 80% by mass of aluminium and up to 20% by mass of one or more additional elements, and second yttria-stabilized zirconia particles, the mixture of powders comprising at least 1.5% by volume of second particles.

Abstract: An assembly includes an SOEC/SOFC-type solid oxide stack, a clamping system for clamping the stack, including at least two clamping rods that can be used to assemble upper and lower clamping plates, and a coupling system for high-temperature fluid-tight coupling of the stack to a heating system for supplying and discharging gas. The coupling system includes a collector with collection ducts for supplying and discharging gas, each provided with a collecting port positioned facing a corresponding communication port of at least one of the upper and lower clamping plates, and seals each placed between a collecting port and a corresponding communication port.

Abstract: A device for converting a liquid into vapor includes an enclosure, a heating surface with a downward slope arranged in the enclosure, and a liquid inlet port connected to an upper portion of the heating surface so that a liquid introduced from the liquid inlet port flows on the heating surface. The device also includes a vapor outlet port formed through a wall of the enclosure. The heating surface includes a heat transfer pipe configured to allow the flowing of a heat transfer fluid to heat the heating surface, and a corner piece including a U-shaped cross-section with a semi-circular portion arranged around the heat transfer pipe and an upper portion forming an opening on the enclosure.

Abstract: A system for high-temperature reversible electrolysis of water, characterised in that it includes: a high-temperature reversible electrolyser, configured to operate in SOEC (solid oxide electrolyser cell) mode to produce hydrogen and store electricity, and/or in SOFC (solid oxide fuel cell) mode to withdraw hydrogen and produce electricity; a hydride tank, thermally coupled with the reversible electrolyser, the system being configured to allow the recovery of heat released by the hydride tank during hydrogen absorption in order to produce pressurised steam intended for entering the reversible electrolyser in SOEC mode, and to allow the recovery of heat released by the one or more outgoing streams from the reversible electrolyser in SOFC mode so as to allow the desorption of hydrogen from the hydride tank.

Abstract: The invention essentially consists of proposing a novel reactor or fuel cell architecture having an active section of the catalytic material for methanation or reforming reaction integrated into the electrode which varies with the composition of the gases, as they are distributed in accordance with the electrochemistry on said electrode.

Abstract: A method for manufacturing an aluminium alloy part by additive manufacturing comprising a step during which a layer of a mixture of powders is melted locally and then solidified, wherein the mixture of powders comprises: —first particles—comprising at least 80 wt % of aluminium and up to 20 wt % of one or more additional elements, and —second particles—of yttria, the volume percentage of second particles in the mixture of powders preferably ranging from 0.5% to 5%.

Abstract: An assembly comprising a SOEC/SOFC-type solid oxide stack, and a clamping system for the stack. The assembly further comprises a system for superheating the gases at the inlet of the stack, comprising: a heating plate integrated within the thickness of at least one of the upper and lower clamping plates of the clamping system; an upper or lower end plate for superheating the gases, comprising a circuit through which the gases to be heated flow; and an inlet duct for the gases to be heated.

Abstract: Method for manufacturing an aluminium alloy part by additive manufacturing comprising a step in which a layer of a mixture of powders is locally melted then solidified, wherein the mixture of powders comprises: first particles comprising at least 80 wt. % aluminium and up to 20 wt. % one or more additional elements, and second particles of ZrSi2, the mixture of powders comprising 1.8 wt. % to 4 wt. % second particles.

Abstract: A coupling system for high-temperature tight coupling of a stack having SOEC/SOFC-type solid oxides is described. The system includes a threaded hollow connector, a smooth hollow connector, and a threaded nut. The threaded hollow connector includes an opening for establishing fluid communication with a gas inlet/outlet pipe and is intended to be attached to the gas inlet/outlet pipe. The smooth hollow connector includes an opening for establishing fluid communication with a gas inlet/outlet pipe of the stack and is intended to be attached to the inlet/outlet pipe. The threaded nut engages with the threaded hollow connector to form a screw/nut system, slides relative to the smooth hollow connector, and includes a first threaded portion and a second smooth portion in sliding contact with the smooth hollow connector.

Abstract: A system for overheating gases at the inlet of a SOEC/SOFC-type solid oxide stack, the stack including a main body that has first and second zones separated by a median plane, and inflow and outflow conduits, the zones include gas circulation circuits extending in the form of a spiral and communicating by means of a passage passing through the main body. A gas flow to be heated entering the inflow conduit circulates in the first gas circulation circuit and passes through the passage to then circulate in the second gas circulation circuit and in the conduit for the outflow of the reheated gases in order to reach the inlet of the SOEC/SOFC-type solid oxide stack.

Abstract: An electrochemical system includes an electrochemical device having a stack of n solid oxide electrochemical cells, n being an integer greater than or equal to 1. The electrochemical system also includes at least n?1 interconnection plates which are interposed between the electrochemical cells, and means for supplying gas to the electrochemical cells and means for collecting gas produced by the electrochemical cells. The electrochemical system further includes means for electrically connecting the system to the outside. The electrochemical device also includes heating means integrated into the stack, said heating means comprising electrical conductors housed in the clamping plates.