Bloom Energy Corporation

Ion America Corporation

John Finn

James F McElroy

Matthias Gottmann

Swaminathan Venkataraman

Fred Mitlitsky

K R Sridhar

M Douglas LeVan

Arne Watson Ballantine

Chockkalingam Karuppaiah

Matthias Gottman

James Mcelroy

M Douglas Levan

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.

Fuel cell system with partial recycling of anode exhaust

A system and method in which a high temperature fuel cell stack exhaust stream is recycled back into the fuel inlet stream of the high temperature fuel cell stack. The recycled stream may be sent to a carbon dioxide separation device which separates carbon dioxide from the fuel exhaust stream. The carbon dioxide separation device may be a carbon dioxide trap, an electrochemical carbon dioxide separator, or a membrane separator. A water separator may be used in conjunction with the carbon dioxide separation device or used separately to continuously remove water from the recycled stream.

SOFC system with selective CO2 removal

A method in which a high temperature electrochemical system, such as a solid oxide fuel cell system, generates hydrogen and optionally electricity in a fuel cell mode. At least a part of the generated hydrogen is separated and stored or provided to a hydrogen using device. A solid oxide regenerative fuel cell system stores carbon dioxide in a fuel cell mode. The system generates a methane fuel in an electrolysis mode from the stored carbon dioxide and water by using a Sabatier subsystem. Alternatively, the system generates a hydrogen fuel in an electrolysis mode from water alone.

Method for the co-production of hydrogen and electricity in a high temperature electrochemical system

A high temperature fuel cell stack system, such as a solid oxide fuel cell system, with an improved balance of plant efficiency includes a thermally integrated reformer, combustor and the fuel cell stack.

High temperature fuel cell system and method of operating same

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, separating at least a portion of hydrogen contained in the fuel exhaust stream using partial pressure swing adsorption, and providing the hydrogen separated from the fuel exhaust stream into the fuel inlet stream.

Fuel cell anode exhaust fuel recovery by adsorption

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, separating at least a portion of hydrogen contained in the fuel exhaust stream using partial pressure swing adsorption, and providing the hydrogen separated from the fuel exhaust stream to a hydrogen storage vessel or to a hydrogen using device.

Partial pressure swing adsorption system for providing hydrogen to a vehicle fuel cell

A high temperature electrochemical system, such as a solid oxide fuel cell system, generates hydrogen and optionally electricity in a fuel cell mode. At least a part of the generated hydrogen is separated and stored or provided to a hydrogen using device. A solid oxide regenerative fuel cell system stores carbon dioxide in a fuel cell mode. The system generates a methane fuel in an electrolysis mode from the stored carbon dioxide and water by using a Sabatier subsystem. Alternatively, the system generates a hydrogen fuel in an electrolysis mode from water alone.

Co-production of hydrogen and electricity in a high temperature electrochemical system

A solid oxide regenerative fuel cell system is used to supply power in a fuel cell mode and to generate a hydrocarbon fuel in an electrolysis mode. The system includes a solid oxide regenerative fuel cell and a reactor adapted to convert an exhaust emitted from the solid oxide regenerative fuel cell to a hydrocarbon gas when the solid oxide regenerative fuel cell operates in an electrolysis mode.

SORFC system and method with an exothermic net electrolysis reaction

A sealing arrangement contains a first mating surface, a second mating surface, and a felt sealing member contacting the first and the second mating surface. The arrangement may be used in a solid oxide fuel cell.

High-temperature compliant compression seal

A fuel cell stack includes an electrolyte, an anode, a cathode, a first conductive felt current conductor/gas flow distributor, and a first separator plate. Thus, a felt conductor/distributor sheet is located between adjacent first and second fuel cells.

Metal felt current conductor and gas flow distributor

A Solid Oxide Regenerative Fuel Cell (SORFC) system stores waste heat from the fuel cell in a heat storage material during the discharge mode. The heat is then used to heat water to be electrolyzed during the charge mode.

Growing community of inventors

Mountain View, CA, United States of America

John Finn