Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Commissariat a L'energie Atomique Et Aux Energies

Bruno Oresic

Stéphane Di Iorio

Magali Reytier

Guilhem Roux

Philippe Szynal

Michel Planque

Charlotte Bernard

Stephane Di Iorio

Thibault Monnet

Julien Petit

Karl Vulliez

An interconnector for a stack of solid oxide cells of the SOEC/SOFC type, intended to be arranged between two adjacent electrochemical cells, which includes a flat face whereon at least one first group of identical first elements in relief and a second group of identical second elements in relief are formed, the first elements in relief having different geometric features with respect to the second elements in relief, the height of each first element in relief being different from the height of each second element in relief, the contact width of each first element in relief being different from the contact width of each second element in relief.

Interconnector for a stack of solid oxide cells of the SOEC/SOFC type including different elements in relief

A process for preparing a component, which may constitute an interconnector for a fuel cell (SOFC) or a high-temperature electrolyser (HTE), may include: (a) preparing a substrate made of metal alloy, the base element of which is iron (Fe) or nickel (Ni), the substrate having two main flat faces; (b) tape casting a thick ceramic layer; (c) localized removal at one or more locations, of material of the tape-cast thick ceramic layer; (d) hot pressing the green thick ceramic layer tape; and (e) grooving the thick ceramic layer so as to delimit channels that are suitable for distributing and/or collecting gases. A component may be obtained from such a process.

Process for producing a component constituting an interconnector of an HTE electrolyser or of an SOFC fuel cell

An electrochemical device may be formed by assembly by stacking preassembled modules, each of these modules being produced as a usual stack of electrochemical cells. The manufacture of preassembled modules can make it possible to produce electrochemical devices with a large number of electrochemical cells, without the bracing problems present and excessive crushing courses that are encountered in the cell stacks according to the prior art, i.e., in a single block.

Electrolysis or co-electrolysis reactor (SOEC) or fuel cell (SOFC) with electrochemical cell stacking by preassembled modules, and associated production process

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.

System for high-temperature tight coupling of a stack having SOEC/SOFC-type solid oxides

The invention relates to arranging a new seal within a porous substrate which forms the contact element of each hydrogen circulating electrode, such as the cathode for an SOEC reactor and the anode for an SOFC fuel cell, and in the periphery of the electrode beyond the ducts for supplying and recovering gases, in order to force the gases to circulate into the only useful zone of the cell which corresponds to the electrochemically active surface of the electrode. Thus, all of the gases supplied can be converted.

Water electrolysis reactor (SOEC) or fuel cell (SOFC) with an increased rate of water vapour use or fuel use, respectively

A seal is mountable in contact with two metal carriers of an electrochemical device, in particular a solid oxide fuel cell (SOFC) or a high-temperature solid oxide electrolyser cell (SOEC) for electrolysis of water vapour. This seal comprises a means for making the seal impermeable, comprising at least one vitreous material; and an electrically insulating supporting means that supports the impermeable means and that has two parallel main faces, an external peripheral edge and an internal peripheral edge, the seal being able to be mounted against these carriers via these main faces, which are covered with the impermeable means. The impermeable means partitions the supporting means between these internal and external edges while extending continuously from one of the main faces to the other through the supporting means, so that the impermeable means directly connects these carriers to each other.

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Tullins, France

Bruno Oresic