Abstract: An onboard rebreathing loop system resident on an aircraft for providing oxygen to aircraft personnel includes a ceramic oxygen generating system (COGS) module configured to receive an inlet air and output a high purity oxygen (O2) gas into a breathing loop and a carbon dioxide (CO2) scrubber module configured to receive exhaled air from the aircraft personnel and output a CO2-scrubbed air into the breathing loop. The high purity O2 gas and CO2-scrubbed air are mixed to form a mixed gas having a partial pressure of O2 suitable for breathing by the aircraft personnel. The onboard rebreathing loop system may further include an odor removal module, an air temperature and/or humidity control module to condition the mixed gas before breathing by the aircraft personnel, and a gas sensor module to confirm the partial pressure of O2 within the mixed gas before breathing by the aircraft personnel.

Abstract: An onboard rebreathing loop system resident on an aircraft for providing oxygen to aircraft personnel includes a ceramic oxygen generating system (COGS) module configured to receive an inlet air and output a high purity oxygen (O2) gas into a breathing loop and a carbon dioxide (CO2) scrubber module configured to receive exhaled air from the aircraft personnel and output a CO2-scrubbed air into the breathing loop. The high purity O2 gas and CO2-scrubbed air are mixed to form a mixed gas having a partial pressure of O2 suitable for breathing by the aircraft personnel. The onboard rebreathing loop system may further include an odor removal module, an air temperature and/or humidity control module to condition the mixed gas before breathing by the aircraft personnel, and a gas sensor module to confirm the partial pressure of O2 within the mixed gas before breathing by the aircraft personnel.

Abstract: A mixed conducting ceramic element comprises a plurality of tubes each having interior and exterior surfaces, a closed end and an open end. A tube support member receives the open ends of the tubes. The ceramic element has a general composition of AxA?x?A?x?ByB?y?B?y?O3-z, where A, A? and A? are selected from Group II elements or the Lanthanoids, and B, B? and B? are selected from the d-block transition metals, and wherein 0<x?1, 0<x??1, 0<x??1, 0<y?1, 0<y??1, 0<y??1, x+x?+x??1, y+y?+y??1, and z is selected so that the resultant composition is charge neutral. The ceramic element can be a composite consisting of two or more component materials, wherein one component is predominantly an electronic conductor and another is predominantly an ionic conductor. The ceramic element may also be a composite material containing at least one component material having a chemical composition of AxA?x?A?x?ByB?y?B?y?O3-z.

Abstract: Composite electrolyte materials comprising at least one component from fully stabilized zirconia (such as 10Sc1CeSZ) and at least one component from partially stabilized zirconia (such as 6Sc1CeSZ) as the electrolyte material for solid state electrochemical devices.

Abstract: A mixed conducting ceramic element comprises a plurality of tubes each having interior and exterior surfaces, a closed end and an open end. A tube support member receives the open ends of the tubes. The ceramic element has a general composition of AxA?x?A?x?ByB?y?B?y?O3?z, where A, A? and A? are selected from Group II elements or the Lanthanoids, and B, B? and B? are selected from the d-block transition metals, and wherein 0<x?1, 0<x??1, 0<x??1, 0<y<1, 0<y??1, 0<y??1, x+x?+x??1, y+y?+y??1, and z is selected so that the resultant composition is charge neutral. The ceramic element can be a composite consisting of two or more component materials, wherein one component is predominantly an electronic conductor and another is predominantly an ionic conductor. The ceramic element may also be a composite material containing at least one component material having a chemical composition of AxA?x?A?x?ByB?y?B?y?O3?z.

Abstract: An electrochemical device (18) for generating a desired gas of the type includes an ionically conductive electrolyte layer (20), a porous electrode layer (22), and a current collector layer (16) that has a high electrical conductivity and is porous to a desired gas (24) generated by the electrochemical device (18). The current collector layer (16) is substantially formed as a film comprised of a layer of spherical refractory material objects (26) having a conductive coating (12) of a precious metal. The coated spherical objects (26) have a desired diameter (28) making them suitable for forming into the film.

Abstract: An electrochemical device (18) for generating a desired gas of the type includes an ionically conductive electrolyte layer (20), a porous electrode layer (22), and a current collector layer (16) that has a high electrical conductivity and is porous to a desired gas (24) generated by the electrochemical device (18). The current collector layer (16) is substantially formed as a film comprised of a layer of spherical refractory material objects (26) having a conductive coating (12) of a precious metal. The coated spherical objects (26) have a desired diameter (28) making them suitable for forming into the film.