Abstract: A method includes providing a precursor powder mixture containing lanthanum oxide particles, strontium oxide particles, manganese oxide particles and cobalt oxide particles and calcining the precursor powder mixture, such that a lanthanum strontium manganate-manganese cobalt oxide composite powder containing composite particles including perovskite and spinel phases is formed.

Abstract: A solid oxide electrochemical cell includes a solid oxide electrolyte, a fuel electrode located on a first side of the solid oxide electrolyte, and an air located on a second side of the solid oxide electrolyte. The air electrode includes strontium-rich lanthanum strontium manganite.

Abstract: An interconnect for an electrochemical cell stack includes reactant holes that extend through the interconnect, and a reactant side including a reactant field containing reactant channels and reactant ribs that extend between the reactant holes, a peripheral seal surface that surrounds the reactant field and the reactant holes, recess seal surfaces disposed inside of the peripheral seal surface on opposing sides of the reactant field and recessed relative to the peripheral seal surface, and nest sidewalls that connect the recess seal surfaces to the peripheral seal surface. The nest sidewalls extend substantially perpendicular to the peripheral seal surface and to the recess seal surfaces. The nest sidewalls, the recess seal surfaces, and tops of the reactant ribs at least partially define a cell nest configured to receive an electrochemical cell. An air side includes an air field disposed between the reactant holes, and ring seal surfaces disposed around the reactant holes.

Abstract: An electrochemical cell stack includes at least two electrochemical cells that each contain a fuel electrode, an air electrode, and an electrolyte located between the fuel electrode and the air electrode, at least one interconnect located between the at least two electrochemical cells, and a contact layer that electrically connects the at least one interconnect and the fuel electrode of an adjacent one of the at least two electrochemical cells. The contact layer includes first wires that extend in a first direction, the first wires including thinner first wires and thicker first wires, the thicker first wires having a thickness that is larger than a thickness of the thinner first wires, and second wires that extend in a second direction different from the first direction.

Abstract: An interconnect includes fuel inlets and outlets that extend through the interconnect at first and second peripheral edges, an air side, and an opposing fuel side. The air side includes an air field including air channels that extend in a first direction, from a third peripheral edge to an opposing fourth peripheral edge, and air side seal surfaces surrounding the first fuel inlet and the first fuel outlet. The fuel side includes a fuel field including fuel channels that extend in the first direction, a fuel inlet manifold configured to fluidly connect the first fuel inlet to first ends of the fuel channels, a fuel outlet manifold configured to fluidly connect the first fuel outlet to second ends of the fuel channels, and a fuel side seal surface extending along the first, second, third, and fourth peripheral edges.

Abstract: An interconnect for an electrochemical stack includes at least one of alternating air channel ribs of different length, seal gutters recessed relative to a perimeter seal surface on a fuel side of the interconnect, or fuel inlet and outlet plenums which extend perpendicular to fuel channels.

Abstract: An interconnect for an electrochemical cell stack, the interconnect including an interconnect substrate having an air side and an opposing fuel side, and a protective layer coated on at least the air side of the interconnect, the protective layer including a transition metal oxide including copper (Cu) and at least one of iron (Fe) and manganese (Mn).

Abstract: A method of forming a protective layer on an interconnect for an electrochemical cell stack includes coating at least one side of the interconnect with a metal oxide powder to form a protective layer, sintering the coated interconnect in an inert atmosphere to at least partially reduce the protective layer, and oxidizing the sintered interconnect in an oxidizing atmosphere to oxidize and densify the protective layer.

Abstract: A method of forming a protective coating on an interconnect for an electrochemical device stack includes providing a powder on the interconnect and laser sintering the powder.

Abstract: Systems, devices, and methods that utilize a method of coating an interconnect for a SOEC or SOFC, the method including wet spraying a coating precursor powder onto an interconnect, and sintering the interconnect in an oxidizing ambient to form the coating.

Abstract: A method is described of producing a catalyst-containing composite oxygen ion membrane and a catalyst-containing composite oxygen ion membrane in which a porous fuel oxidation layer and a dense separation layer and optionally, a porous surface exchange layer are formed on a porous support from mixtures of (Ln1?xAx)wCr1?yByO3?? and a doped zirconia. Adding certain catalyst metals into the fuel oxidation layer not only enhances the initial oxygen flux, but also reduces the degradation rate of the oxygen flux over long-term operation. One of the possible reasons for the improved flux and stability is that the addition of the catalyst metal reduces the chemical reaction between the (Ln1?xAx)wCr1?yByO3?? and the zirconia phases during membrane fabrication and operation, as indicated by the X-ray diffraction results.

Abstract: A method for creating a coating onto an inner diameter of conduit, whereby an injection nozzle is moved in a forward direction until its tip is aligned with the end of the conduit. Slurry is pumped from a reservoir into the injection nozzle and then is discharged through the tip of the injection nozzle. The slurry flows, distributes and spreads onto the surface of the conduit. The conduit is rotated and the nozzle is retracted as slurry continues to discharge from the nozzle to coat the remainder of the conduit.

Abstract: A porous metallic coating is provided. The coating is characterized by a combination of optimized properties that improve coating performance, as measured by heat transfer efficiency. The porous coating has optimal ranges for properties such as porosity, particle size and thickness, and has particular applicability in boiling heat transfer applications as part of an air separations unit. The porous coatings are derived from slurry-based formulations that include a mixture of metallic particles, a binder and a solvent.

Abstract: A method is described of producing a catalyst-containing composite oxygen ion membrane and a catalyst-containing composite oxygen ion membrane in which a porous fuel oxidation layer and a dense separation layer and optionally, a porous surface exchange layer are formed on a porous support from mixtures of (Ln1?xAx)wCr1?yByO3?? and a doped zirconia. Adding certain catalyst metals into the fuel oxidation layer not only enhances the initial oxygen flux, but also reduces the degradation rate of the oxygen flux over long-term operation. One of the possible reasons for the improved flux and stability is that the addition of the catalyst metal reduces the chemical reaction between the (Ln1?xAx)wCr1?yByO3?? and the zirconia phases during membrane fabrication and operation, as indicated by the X-ray diffraction results.

Abstract: A porous metallic coating is provided. The coating is characterized by a combination of optimized properties that improve coating performance, as measured by heat transfer efficiency. The porous coating has optimal ranges for properties such as porosity, particle size and thickness, and has particular applicability in boiling heat transfer applications as part of an air separations unit. The porous coatings are derived from slurry-based formulations that include a mixture of metallic particles, a binder and a solvent.

Abstract: A porous metallic coating is provided. The coating is characterized by a combination of optimized properties that improve coating performance, as measured by heat transfer efficiency. The porous coating has optimal ranges for properties such as porosity, particle size and thickness, and has particular applicability in boiling heat transfer applications as part of an air separations unit. The porous coatings are derived from slurry-based formulations that include a mixture of metallic particles, a binder and a solvent.

Abstract: A composite oxygen ion transport membrane having a dense layer, a porous support layer, an optional intermediate porous layer located between the porous support layer and the dense layer and an optional surface exchange layer, overlying the dense layer. The dense layer has electronic and ionic phases. The ionic phase is composed of scandia doped, yttrium or cerium stabilized zirconia. The electronic phase is composed of a metallic oxide containing lanthanum, strontium, chromium, iron and cobalt. The porous support layer is composed of zirconia partially stabilized with yttrium, scandium, aluminum or cerium or mixtures thereof. The intermediate porous layer, if used, contains the same ionic and electronic phases as the dense layer. The surface exchange layer is formed of an electronic phase of a metallic oxide of lanthanum and strontium that also contains chromium, iron and cobalt and an ionic phase of scandia doped zirconia stabilized with yttrium or cerium.

Abstract: A method for creating a coating onto a conduit is provided. The method includes rotating the conduit while injecting a controlled amount of slurry onto the surface of an inner diameter of the conduit through a nozzle that is retracted from out of the conduit at a controlled speed. The method offers improved reproducibility and repeatability of coating properties in comparison to conventional coating methods.

Abstract: A porous metallic coating is provided. The coating is characterized by a combination of optimized properties that improve coating performance, as measured by heat transfer efficiency. The porous coating has optimal ranges for properties such as porosity, particle size and thickness, and has particular applicability in boiling heat transfer applications as part of an air separations unit. The porous coatings are derived from slurry-based formulations that include a mixture of metallic particles, a binder and a solvent.

Abstract: A method is described of producing a composite oxygen ion membrane and a composite oxygen ion membrane in which a porous fuel oxidation layer and a dense separation layer and optionally, a porous surface exchange layer are formed on a porous support from mixtures of (Ln1-xAx)wCr1-yByO3-? and a doped zirconia. Preferred materials are (La0.8Sr0.2)0.95Cr0.7Fe0.3O3-? for the porous fuel oxidation layer, (La0.8Sr0.2)0.95Cr0.5Fe0.5O3-? for the dense separation layer, and (La0.8Sr0.2)0.95Cr0.3Fe0.7O3-? for the porous surface exchange layer. Firing the said fuel activation and separation layers in nitrogen atmosphere unexpectedly allows the separation layer to sinter into a fully densified mass.