摘要:
An array-type sensor that senses NH3 includes non-Nernstian sensing elements constructed from metal and/or metal-oxide electrodes on an O2 ion conducting substrate. In one example sensor, one electrode may be made of platinum, another electrode may be made of manganese (III) oxide (Mn2O3), and another electrode may be made of tungsten trioxide (WO3). Some sensing elements may further include an electrode made of La0.6Sr0.4Co0.2Fe0.8O3 and another electrode made of LaCr0.95Mg0.05O3.
摘要翻译:感测NH3的阵列型传感器包括由O 2离子传导基底上的金属和/或金属氧化物电极构成的非仙女感测元件。 在一个示例性传感器中,一个电极可以由铂制成,另一个电极可以由氧化锰(III)(Mn 2 O 3)制成,另一个电极可以由三氧化钨(WO3)制成。 一些感测元件还可以包括由La0.6Sr0.4Co0.2Fe0.8O3制成的电极和另一个由LaCr0.95Mg0.05O3制成的电极。
摘要:
Composite electrolyte materials include composites comprising 8YSZ in a range of 50-95%, balance 3YSZ. Either the 8YSZ or the 3YSZ can be substituted with a composition having the general formula A1-x-yBxCy where: A=Zr0.84Y0.16O2; B=at least one of the following: Zr1-xDxO2 where: D=at least one of the group Mg, Ca, Sc, and Y, and x=0.03 to 0.16; and Ce1-xRExO2 where: RE=at least one rare-earth element and x=0.05 to 0.20; C=Al2O3 where y=0 to 0.20. The composite electrolyte materials are useful in solid state electrochemical devices such as solid oxide fuel cells and electrolyzers.
摘要翻译:复合电解质材料包括包含在50-95%范围内的8YSZ,余量为3YSZ的复合材料。 可以用具有通式A1-x-yBxCy的组合物代替8YSZ或3YSZ,其中:A = Zr0.84Y0.16O2; B =以下至少之一:Zr1-xDxO2其中:D = Mg,Ca,Sc和Y中的至少一种,x = 0.03至0.16; 和Ce1-xRExO2,其中:RE =至少一种稀土元素,x = 0.05至0.20; C = Al2O3,其中y = 0至0.20。 复合电解质材料可用于固态氧化物燃料电池和电解器等固态电化学装置。
摘要:
An internal current collector for use inside a tubular solid oxide fuel cell (TSOFC) electrode comprises a tubular coil spring disposed concentrically within a TSOFC electrode and in firm uniform tangential electrical contact with the electrode inner surface. The current collector maximizes the contact area between the current collector and the electrode. The current collector is made of a metal that is electrically conductive and able to survive under the operational conditions of the fuel cell, i.e., the cathode in air, and the anode in fuel such as hydrogen, CO, CO2, H2O or H2S.
摘要:
The present invention is a glass-ceramic material and method of making useful for joining at least two solid ceramic parts. The seal is a blend of MAO—MBOy—SiO2 that substantially matches a coefficient of thermal expansion of the solid electrolyte. According to the present invention, a series of glass ceramics in the MAO—MBOy—SiO2 system can be used to join or seal both tubular and planar ceramic solid oxide fuel cells, oxygen electrolyzers, and membrane reactors for the production of syngas, commodity chemicals and other products.
摘要:
A fuel cell comprises an anode, a cathode, a solid electrolyte disposed between the anode and the cathode, and interconnect means for providing an electrical connection located adjacent to either the cathode or the anode but not adjacent to the solid electrolyte. The interconnect means includes an interconnect layer having a composition of a mixture of an electrical conductor and a ceramic matrix material that is sinterable in an oxidizing atmosphere at a temperature of less than about 1500.degree. C. The interconnect means includes, a first buffer layer having a region with a composition that is intermediate between that of the anode and that of the interconnect layer, a second buffer layer having a region with a composition that is intermediate between that of the cathode and that of the interconnect layer, and the interconnect layer disposed between the first buffer layer and the second buffer layer.
摘要:
A method of constructing a fuel cell includes a sintering technique that improves the structure and performance of the fuel cell elements. The method includes furnishing a fuel cell core comprising trilayers of anode, cathode, and interconnect layers, and trilayers of anode, cathode, and electrolyte layers. Each of the layers has a mixture of the respective anode, cathode, or interconnect ceramic material mixed with processing aid materials including a binder and a plasticizer, and, in the case of the interconnect mixture, optionally a flux. This partially fabricated fuel cell core is sintered to form a monolithic structure, the step of sintering being performed by heating the core at a heating rate of greater than about 40.degree. C. per minute to a sintering temperature of from about 1550.degree. to about 1600.degree. C., maintaining the core at the sintering temperature for a time of from about 5 to about 20 minutes, and cooling the sintered structure.
摘要:
A method for treating a porous item constructed of metal powder, such as a powder made of Series 400 stainless steel, involves a step of preheating the porous item to a temperature of between about 700 and 900° C. degrees in an oxidizing atmosphere and then sintering the body in an inert or reducing atmosphere at a temperature which is slightly below the melting temperature of the metal which comprises the porous item. The thermal stability of the resulting item is enhanced by this method so that the item retains its porosity and metallic characteristics, such as ductility, at higher (e.g. near-melting) temperatures.
摘要:
A fuel cell unit includes an array of solid oxide fuel cell tubes having porous metallic exterior surfaces, interior fuel cell layers, and interior surfaces, each of the tubes having at least one open end; and, at least one header in operable communication with the array of solid oxide fuel cell tubes for directing a first reactive gas into contact with the porous metallic exterior surfaces and for directing a second reactive gas into contact with the interior surfaces, the header further including at least one busbar disposed in electrical contact with at least one surface selected from the group consisting of the porous metallic exterior surfaces and the interior surfaces.
摘要:
An array-type sensor that senses NH3 includes non-Nernstian sensing elements constructed from metal and/or metal-oxide electrodes on an O2 ion conducting substrate. In one example sensor, one electrode may be made of platinum, another electrode may be made of manganese (III) oxide (Mn2O3), and another electrode may be made of tungsten trioxide (WO3). Some sensing elements may further include an electrode made of La0.6Sr0.4Co0.2Fe0.8O3 and another electrode made of LaCr0.95Mg0.05O3.
摘要翻译:感测NH3的阵列型传感器包括由O 2离子传导基底上的金属和/或金属氧化物电极构成的非仙女感测元件。 在一个示例性传感器中,一个电极可以由铂制成,另一个电极可以由氧化锰(III)(Mn 2 O 3)制成,另一个电极可以由三氧化钨(WO3)制成。 一些感测元件还可以包括由La0.6Sr0.4Co0.2Fe0.8O3制成的电极和另一个由LaCr0.95Mg0.05O3制成的电极。
摘要:
The invention relates to a ferritic alloy composition. In one aspect, the ferritic alloy composition comprises about 16 to 20 wt. % Cr, about 7 to 11 wt. % Mo, and the balance Fe. In another aspect, the ferritic composition comprises about 10 to 14 wt. % Cr, about 7 to 11 wt. % Mo or about 10 to 20 wt. % W, and the balance Fe.