Abstract:
A method of operating a fuel cell system includes providing a fuel inlet stream into a fuel cell stack, operating the fuel cell stack to generate electricity and a hydrogen containing fuel exhaust stream having a temperature above 200 C, lowering a temperature of the fuel exhaust stream to 200 C or less, separating the fuel exhaust stream into a first separated fuel exhaust stream and a second separated fuel exhaust stream, and recycling the first separated fuel exhaust stream into the fuel inlet stream.
Abstract:
A Solid Oxide Regenerative Fuel Cell (SORFC) system (240) stores wast heat from the fuel cell in a heat storage material (250) during discharge mode. The heat is then used to heat water to be electrolyzed during the charge mode.
Abstract:
A hydrocarbon fuel storage device contains nanotubes adapted to store a hydrocarbon fuel. A hydrocarbon fuel storage method includes storing the hydrocarbon fuel in nanotubes. The hydrocarbon fuel may be provided to from the nanotubes to a fuel cell stack or to another device.
Abstract:
A solid oxide fuel cell (SOFC) includes a cathode electrode, a solid oxide electrolyte, and an anode electrode having a first portion and a second potion, such that the first portion is located between the electrolyte and the second portion. The anode electrode comprises a cermet comprising a nickel containing phase and a ceramic phase. The first portion of the anode electrode contains a lower porosity and a lower ratio of the nickel containing phase to the ceramic phase than the second portion of the anode electrode.
Abstract:
A solid oxide fuel cell (SOFC) includes a cathode electrode, a solid oxide electrolyte, and an anode electrode having a first portion and a second potion, such that the first portion is located between the electrolyte and the second portion. The anode electrode comprises a cermet comprising a nickel containing phase and a ceramic phase. The first portion of the anode electrode contains a lower porosity and a lower ratio of the nickel containing phase to the ceramic phase than the second portion of the anode electrode.
Abstract:
Anode and cathode separator plates (28, 26) are suitable for use in ion pumps (16) for converting an input stream such as reformate into a pressurized and purified hydrogen-rich gas stream. The plates may include a single cathode outlet opening (330) forming a portion of cathode output gas manifold, an anode inlet opening (210) forming a portion of an inlet gas stream manifold and being sized larger than inlet cathode outlet opening, the distance of the anode inlet opening to an edge of the plate being less than the distance of the cathode outlet opening from an edge of the plate, and the size of the fluid flow channel (134) of the anode separator plate being smaller than the size of the fluid flow channel (136) of the cathode separator plate. Methods for forming the plates and infrastructure systems (10) are also disclosed.