Patent application number | Description | Published |
20090159897 | METHOD FOR TREATING SEMICONDUCTOR PROCESSING COMPONENTS AND COMPONENTS FORMED THEREBY - A semiconductor processing component has an outer surface portion comprised of silicon carbide, the outer surface portion having a skin impurity level and a bulk impurity level. The skin impurity level is average impurity level from 0 nm to 100 nm of depth into the outer surface portion, the bulk impurity level is measured at a depth of at least 3 microns into the outer surface portion, and the skin impurity level is not greater than 80% of the bulk impurity level | 06-25-2009 |
20090186249 | Titanate and metal interconnects for solid oxide fuels cells - A solid oxide fuel cell (SOFC) includes a plurality of sub-cells. Each sub-cell includes a first electrode in fluid communication with a source of oxygen gas, a second electrode in fluid communication with a source of a fuel gas, and a solid electrolyte between the first electrode and the second electrode. The SOFC further includes an interconnect between the sub-cells. In one embodiment, the SOFC has a first surface in contact with the first electrode of each sub-cell and a second surface that is in contact with the second electrode of each sub-cell; and the interconnect consists essentially of a doped M-titanate based perovskite, wherein M is an alkaline earth metal. In another embodiment, the interconnect includes a first layer in contact with the first electrode of each sub-cell, and a second layer in contact with the second electrode of each sub-cell. The first layer includes an electrically conductive material selected from the group consisting of an metal, a metal alloy and a mixture thereof. The second layer includes a doped M-titanate based perovskite, wherein M is an alkaline earth metal. A solid oxide fuel cell described above is formed by connecting each of the sub-cells with an interconnect described above. | 07-23-2009 |
20090186250 | Bilayer interconnects for solid oxide fuel cells - A solid oxide fuel cell (SOFC) includes a plurality of sub-cells. Each sub-cell includes a first electrode in fluid communication with a source of oxygen gas, a second electrode in fluid communication with a source of a fuel gas, and a solid electrolyte between the first electrode and the second electrode. The SOFC further includes an interconnect between the sub-cells. The interconnect includes a first layer in contact with the first electrode of each sub-cell, and a second layer in contact with the second electrode of each sub-cell. The first layer includes at least one material selected from the group consisting of a doped M-ferrite based perovskite, a doped M′-ferrite based perovskite, a doped MM′-ferrite based perovskite and a doped M′-chromite based perovskite, wherein M is an alkaline earth metal and M′ is a rare earth metal. The second layer includes a doped M″-titanate based perovskite, wherein M″ is an alkaline earth metal. A solid oxide fuel cell having a plurality of cells as described above is formed by connecting each of a plurality of sub-cells with an interconnect as described above. | 07-23-2009 |
20100032857 | Ceramic components, coated structures and methods for making same - Methods of forming ceramic components are disclosed. One method calls for chemical vapor depositing a ceramic material over a substrate having first and second opposite surfaces to define a coated structure, the ceramic material forming a layer overlying both the first and second opposite surfaces. The layer and the substrate have a difference in thermal expansion coefficients of at least 0.5 ppm/K. The substrate is removed, leaving behind the layer. Ceramic components and coated structures are also disclosed. | 02-11-2010 |
20100062243 | METHOD FOR TREATING SEMICONDUCTOR PROCESSING COMPONENTS AND COMPONENTS FORMED THEREBY - A semiconductor processing component can include SiC, wherein the semiconductor processing component has an impurity ratio less than 34:1. The impurity ratio can be a ratio of a first average impurity concentration to a second impurity level, wherein the first average impurity concentration is an average impurity concentration of a impurity from an exposed surface of the semiconductor processing component to a depth of 0.2 microns from the exposed surface, and the second average impurity concentration is an average impurity concentration of the impurity from a depth of 0.8 microns from the exposed surface to a depth of 1.0 micron from the exposed surface. | 03-11-2010 |
20100167164 | SOFC Cathode and Method for Cofired Cells and Stacks - A solid oxide fuel cell includes an anode layer, an electrolyte layer over a surface of the anode layer, and a cathode layer over a surface of the electrolyte layer. The cathode layer includes a cathode bulk layer, a porous cathode functional layer at an electrolyte, an intermediate cathode layer partitioning the cathode bulk layer and the porous cathode functional layer, the porous intermediate cathode layer having a porosity greater than that of the cathode bulk layer. The solid oxide fuel cells can be combined to form subassemblies that are bonded together to form solid oxide fuel cell assemblies. | 07-01-2010 |
20100167170 | Co-doped YSZ electrolytes for solid oxide fuel cell stacks - A solid oxide fuel cell electrolyte is fabricated by combining an yttria-stabilized zirconia powder with α-Al | 07-01-2010 |
20100178589 | Thermal Shock-Tolerant Solid Oxide Fuel Cell Stack - A solid oxide fuel cell (SOFC) includes a plurality of subassemblies. Each subassembly includes at least one subcell of a first electrode, a second electrode and an electrolyte between the first and second electrodes. A first bonding layer is at the second electrode and an interconnect layer is at the first bonding layer distal to the electrolyte. A second bonding layer that is compositionally distinct from the first bonding layer is at the interconnect layer, whereby the interconnect partitions the first and second bonding layers. A method of fabricating a fuel cell assembly includes co-firing at least two subassemblies using a third bonding layer that is microstructurally or compositionally distinct from the second bonding layer. | 07-15-2010 |
20100183947 | Highly Sinterable Lanthanum Strontium Titanate Interconnects Through Doping - An interconnect material is formed by combining a lanthanum-doped strontium titanate with an aliovalent transition metal to form a precursor composition and sintering the precursor composition to form the interconnect material. The aliovalent transition metal can be an electron-acceptor dopant, such as manganese, cobalt, nickel or iron, or the aliovalent transition metal can be an electron-donor dopant, such as niobium or tungsten. A solid oxide fuel cell, or a strontium titanate varistor, or a strontium titanate capacitor can include the interconnect material that includes a lanthanum-doped strontium titanate that is further doped with an aliovalent transition metal. | 07-22-2010 |
20110158880 | ANISOTROPIC CTE LSM FOR SOFC CATHODE - An anisotropic coefficient of thermal expansion (CTE) cathode of a solid oxide fuel cell (SOFC) is formed by placing a layer of perovskite powder between two platens, and sintering the layer while applying pressure to the platens, thereby forming the anisotropic CTE cathode. The perovskite can be lanthanum strontium manganite (LSM). | 06-30-2011 |
20120009505 | ANISOTROPIC CTE LSM FOR SOFC CATHODE - An anisotropic coefficient of thermal expansion (CTE) cathode of a solid oxide fuel cell (SOFC) is formed by placing a layer of perovskite powder between two platens, and sintering the layer while applying pressure to the platens, thereby forming the anisotropic CTE cathode. The perovskite can be lanthanum strontium manganite (LSM). | 01-12-2012 |
20120129068 | SUBSTANTIALLY FLAT SINGLE CELLS FOR SOFC STACKS - A solid oxide fuel cell includes an anode layer, a cathode layer, and an electrolyte layer partitioning the anode layer and the cathode layer. The anode layer and the cathode layer are of about the same thickness and have about the same coefficient of thermal expansion (CTE). | 05-24-2012 |
20130137014 | SOLID OXIDE FUEL CELL INTERCONNECT CELLS - A bonding layer, disposed between an interconnect layer and an electrode layer of a solid oxide fuel cell article, may be formed from a yttria stabilized zirconia (YSZ) powder having a monomodal particle size distribution (PSD) with a d | 05-30-2013 |
20130177831 | SOLID OXIDE FUEL CELL INTERCONNECTS INCLUDING A CERAMIC INTERCONNECT MATERIAL AND PARTIALLY STABILIZED ZIRCONIA - An interconnect of a solid oxide fuel cell article is disclosed. The interconnect is disposed between a first electrode and a second electrode of the solid oxide fuel cell article. The interconnect comprises a first phase including a ceramic interconnect material and a second phase including partially stabilized zirconia. The partially stabilized zirconia may be in a range of between about 0.1 vol % and about 70 vol % of the total volume of the interconnect. | 07-11-2013 |
20130344412 | TITANATE AND METAL INTERCONNECTS FOR SOLID OXIDE FUEL CELLS - A solid oxide fuel cell (SOFC) includes a plurality of sub-cells. Each sub-cell includes a first electrode in fluid communication with a source of oxygen gas, a second electrode in fluid communication with a source of a fuel gas, and a solid electrolyte between the first electrode and the second electrode. The SOFC further includes an interconnect between the sub-cells. In one embodiment, the SOFC has a first surface in contact with the first electrode of each sub-cell and a second surface that is in contact with the second electrode of each sub-cell; and the interconnect consists essentially of a doped M-titanate based perovskite, wherein M is an alkaline earth metal. In another embodiment, the interconnect includes a first layer in contact with the first electrode of each sub-cell, and a second layer in contact with the second electrode of each sub-cell. The first layer includes an electrically conductive material selected from the group consisting of an metal, a metal alloy and a mixture thereof. The second layer includes a doped M-titanate based perovskite, wherein M is an alkaline earth metal. A solid oxide fuel cell described above is formed by connecting each of the sub-cells with an interconnect described above. | 12-26-2013 |
20140170531 | POWDER MIXTURE FOR LAYER IN A SOLID OXIDE FUEL CELL - The present disclosure relates to solid oxide fuel cells, and particularly raw powder materials which form a layer in a solid oxide fuel. The raw powder materials include an ionic conductor powder material; and an electronic conductor powder material. The ratio of an average particle diameter of the ionic conductor powder material to an average particle diameter of the electronic conductor powder material is greater than about 1:1, and an average particle diameter of at least one of the electronic conductor powder material or the ionic conductor powder material is coarse. | 06-19-2014 |
20140186647 | BROAD PARTICLE SIZE DISTRIBUTION POWDERS FOR FORMING SOLID OXIDE FUEL CELL COMPONENTS - A raw material powder for forming a layer of a solid oxide fuel cell (SOFC) article includes a broad particle size distribution (BPSD) defined by plotted curve of frequency versus diameter of the raw material powder may be characterized as having a first standard deviation including at least about 78% to at least about 99% of a total content of particles of the raw material powder. The plotted curve of the BPSD may also be characterized as having a first maximum value and a first minimum value, wherein the difference between the first maximum value and first minimum value is not greater than about 8%. | 07-03-2014 |
20140295313 | SANBORNITE-BASED GLASS-CERAMIC SEAL FOR HIGH-TEMPERATURE APPLICATIONS - A glass-ceramic seal for ionic transport devices such as solid oxide fuel cell stacks or oxygen transport membrane applications. Preferred embodiments of the present invention comprise glass-ceramic sealant material based on a Barium-Aluminum-Silica system, which exhibits a high enough coefficient of thermal expansion to closely match the overall CTE of a SOFC cell/stack (preferably from about 11 to 12.8 ppm/° C.), good sintering behavior, and a very low residual glass phase (which contributes to the stability of the seal). | 10-02-2014 |
20150079494 | SOLID OXIDE FUEL CELL INTERCONNECT CELLS - A bonding layer, disposed between an interconnect layer and an electrode layer of a solid oxide fuel cell article, may be formed from a yttria stabilized zirconia (YSZ) powder having a monomodal particle size distribution (PSD) with a d | 03-19-2015 |