An assembly includes a solid-oxide pack of the SOEC/SOFC type and a system for clamping the pack. The assembly furthermore includes a coupling system gastight at high temperature, including a clamping base with a first through internal pipe to enable a tube to pass, a support base located in the pipe and having a second through internal pipe, and a seal, having a C shape, positioned against a first end of the support base (92). One of the clamping plates includes a through pipe for gas to pass having a support surface for the seal and a threaded countersink for receiving a thread of the clamping base.

In one aspect, the disclosure relates to method of forming an electrocatalyst structure on an electrode, comprising depositing a first layer on the electrode using atomic layer deposition (ALD), wherein the first layer comprises a plurality of discrete nanoparticles of a first electrocatalyst, and depositing one or more of a second layer on the first layer and the electrode using ALD, wherein the one or more second layer comprises a second electrocatalyst, wherein the first layer and the one or more second layers, collectively, form a multi-layer electrocatalyst structure on the electrode. Also disclosed are electrodes having a multi-layer electrocatalyst structure. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

A composite including an electrolyte layer containing solid oxide, and at least one electrode selected from a cathode disposed on one side of the electrolyte layer in a first direction and an anode disposed on the other side of the electrolyte layer in the first direction. Either one of two surfaces of the composite located on opposite sides in the first direction satisfies a first requirement that, as viewed in the first direction, a curvature determined on the basis of any three points juxtaposed at intervals of 5 mm is less than 0.0013 (l/mm) and that, as viewed in a second direction perpendicular to the first direction, the curvature is the reciprocal of the radius of an imaginary circle passing through the any three points.

An electrolyte sheet for solid oxide fuel cells that includes: a ceramic plate body having a through hole penetrating therethrough in a thickness direction thereof, wherein a shortest distance between a first point on an outer edge of the ceramic plate body and a second point on a peripheral edge of the through hole is not shorter than 1 mm and not longer than 5 mm, and a warpage height in an area between the first point and the second point is not more than 150 μm.

An intermediate temperature solid oxide fuel cell (IT-SOFC) includes an anode layer, an electrolyte adjacent to the anode layer, and a cathode layer adjacent to the electrolyte and including a material of formula (I) or (II): Sr.sub.2OsO.sub.4 (I) or Ba.sub.2MO.sub.4 (II), where M is a transition metal or post-transition metal.

A membrane electrode assembly according to the present disclosure is a membrane electrode assembly including: a solid electrolyte membrane containing an electrolyte material; and an electrode in contact with a reactant gas, wherein the electrode includes a structural support including a ceramic member, and a pore extending from a boundary surface in contact with the reactant gas toward the solid electrolyte membrane in the structural support and filled with a filler having at least one selected from the group consisting of hydrogen oxidation activity, oxygen reduction activity, proton reduction activity, steam decomposition activity, and oxide ion oxidation activity.

A method of producing an infiltrated solid oxide fuel cell (SOFC) layer. The method begins by infiltrating a solution containing a solute into a SOFC layer to produce a primary SOFC layer. The primary SOFC layer is then dried in a heated environment, wherein the heated environment ranges in temperature from about 25° C. to about 100° C. to produce a dry primary SOFC layer. The dry primary SOFC layer is then cooled at a rate less than about 5° C./min to room temperature to produce a cooled primary SOFC layer. The cooled primary SOFC layer is then heated to a temperature greater than 500° C. then quenching to a temperature from about 10° C. to about 30° C. to produce an infiltrated SOFC layer.

Realized is an element having an electrolyte layer that is dense and has high gas barrier characteristics. A metal-supported electrochemical element includes at least a metal substrate as a support, an electrode layer formed on/over the metal substrate, a buffer layer formed on the electrode layer, and an electrolyte layer formed on the buffer layer. The electrode layer is porous and the electrolyte layer is dense. The buffer layer has density higher than density of the electrode layer and lower than density of the electrolyte layer.

The present specification relates to a sheet laminate for a solid oxide fuel cell, a precursor for a solid oxide fuel cell including the same, an apparatus for manufacturing a sheet laminate for a solid oxide fuel cell, and a method for manufacturing a sheet laminate for a solid oxide fuel cell.

The present invention provides a catalyst electrode for oxygen evolution comprising an electrode current collector comprising a carbon fiber fabric, a nanowire layer comprising a metal oxide-based porous nanowire grown radially from the surface of the carbon fiber, and a porous carbon coating layer disposed around the outer surface of the nanowire, thereby maximizing the specific surface area and increasing the electron transfer rate, and thus exhibiting an excellent catalytic activity for oxygen evolution reaction, and a preparation method thereof.