Oxygen getters for anode protection in a solid-oxide fuel cell stack

Title: Oxygen getters for anode protection in a solid-oxide fuel cell stack

Abstract

In a fuel cell assembly, nickel-based anodes are readily oxidized when exposed to oxygen as may happen through atmospheric invasion of the assembly during cool-down following shutdown of the assembly. Repeated anode oxidation and reduction can be destructive of the anodes, leading to cracking and failure. To prevent such oxygen migration, oxygen getter devices containing oxygen-gettering material such as metallic nickel are provided in the fuel passageways leading to and from the anodes. Oxidation of the oxygen-gettering material is readily reversed through reduction by fuel when the assembly is restarted.

Inventors:: England, Diane M.; Haltiner, Jr., Karl J.; Kelly, Sean M.; Faville, Michael T.

Issue Date:: 2008-10-14

Research Org.:: Delphi Technologies, Inc., Troy, MI (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1531568

Patent Number(s):: 7,435,490

Application Number:: 11/593,672

Assignee:: Delphi Technologies, Inc. (Troy, MI)

DOE Contract Number:: FC26-02NT41246

Resource Type:: Patent

Resource Relation:: Patent File Date: 2006-11-07

Country of Publication:: United States

Language:: English

Citation Formats


                    England, Diane M., Haltiner, Jr., Karl J., Kelly, Sean M., and Faville, Michael T. Oxygen getters for anode protection in a solid-oxide fuel cell stack.  United States: N. p., 2008. 
        Web.

Copy to clipboard


                    England, Diane M., Haltiner, Jr., Karl J., Kelly, Sean M., & Faville, Michael T. Oxygen getters for anode protection in a solid-oxide fuel cell stack.  United States.

Copy to clipboard


                    England, Diane M., Haltiner, Jr., Karl J., Kelly, Sean M., and Faville, Michael T. Tue .  
        "Oxygen getters for anode protection in a solid-oxide fuel cell stack".  United States.  https://www.osti.gov/servlets/purl/1531568.

Copy to clipboard


                    
@article{osti_1531568,

  title        = {Oxygen getters for anode protection in a solid-oxide fuel cell stack},

  author       = {England, Diane M. and Haltiner, Jr., Karl J. and Kelly, Sean M. and Faville, Michael T.},

  abstractNote = {In a fuel cell assembly, nickel-based anodes are readily oxidized when exposed to oxygen as may happen through atmospheric invasion of the assembly during cool-down following shutdown of the assembly. Repeated anode oxidation and reduction can be destructive of the anodes, leading to cracking and failure. To prevent such oxygen migration, oxygen getter devices containing oxygen-gettering material such as metallic nickel are provided in the fuel passageways leading to and from the anodes. Oxidation of the oxygen-gettering material is readily reversed through reduction by fuel when the assembly is restarted.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2008},

  month        = {10}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Heat flux meter
patent, August 1986

Wynnyckyj, John R.; Rhodes, Edward
US Patent Document 4,607,961
URL: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=4607961

Fuel cell interconnect device
patent, August 1999

Badwal, Sukhvinder S.; Foger, Karl; Zheng, Xiao G.
US Patent Document 5,942,349
URL: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=5942349

Works referencing / citing this record:

Fuel cell system with interconnect
patent, December 2016

Liu, Zhien; Goettler, Richard W.
US Patent Document 9,525,181
URL: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=9525181

Similar records in DOE Patents and OSTI.GOV collections:

Anode protection system for shutdown of solid oxide fuel cell system

Patent Li, Bob X; Grieves, Malcolm J; Kelly, Sean M

An Anode Protection Systems for a SOFC system, having a Reductant Supply and safety subsystem, a SOFC anode protection subsystem, and a Post Combustion and slip stream control subsystem. The Reductant Supply and safety subsystem includes means for generating a reducing gas or vapor to prevent re-oxidation of the Ni in the anode layer during the course of shut down of the SOFC stack. The underlying ammonia or hydrogen based material used to generate a reducing gas or vapor to prevent the re-oxidation of the Ni can be in either a solid or liquid stored inside a portable container. Themore »« less
Full Text Available
Solid oxide fuel cell generator with removable modular fuel cell stack configurations

Patent Gillett, James E. (Greensburg, PA); Dederer, Jeffrey T. (Valencia, PA); Zafred, Paolo R. (Pittsburgh, PA); ...

A high temperature solid oxide fuel cell generator produces electrical power from oxidation of hydrocarbon fuel gases such as natural gas, or conditioned fuel gases, such as carbon monoxide or hydrogen, with oxidant gases, such as air or oxygen. This electrochemical reaction occurs in a plurality of electrically connected solid oxide fuel cells bundled and arrayed in a unitary modular fuel cell stack disposed in a compartment in the generator container. The use of a unitary modular fuel cell stack in a generator is similar in concept to that of a removable battery. The fuel cell stack is provided inmore »« less
Full Text Available
Method and apparatus for thermal, mechanical, and electrical optimization of a solid-oxide fuel cell stack

Patent MacBain, John A.; Kelly, Sean M.; Mergler, Christopher

A solid-oxide fuel cell stack assembly comprising a plurality of sub-stacks, preferably two sub-stacks each containing one-half the total number of fuel cells. Cathode air and fuel gas are passed through the first sub-stack, wherein they are partially reacted and also heated. The exhaust cathode air and the exhaust fuel gas from the first sub-stack are directed to the respective inlets of the second sub-stack, becoming the supply cathode air and fuel gas therefor. A first heat exchanger in the flow paths between the sub-stacks and a second heat exchanger ahead of the sub-stacks can help to balance the performancemore »« less
Full Text Available
Composite solid oxide fuel cell anode based on ceria and strontium titanate

Patent Marina, Olga A. (Richland, WA); Pederson, Larry R. (Richland, WA)

An anode and method of making the same wherein the anode consists of two separate phases, one consisting of a doped strontium titanate phase and one consisting of a doped cerium oxide phase. The strontium titanate phase consists of Sr.sub.1-xM.sub.xTiO.sub.3-.delta., where M is either yttrium (Y), scandium (Sc), or lanthanum (La), where "x" may vary typically from about 0.01 to about 0.5, and where .delta. is indicative of some degree of oxygen non-stoichiometry. A small quantity of cerium may also substitute for titanium in the strontium titanate lattice. The cerium oxide consists of N.sub.yCe.sub.1-yO.sub.2-.delta., where N is either niobium (Nb),more »« less
Full Text Available
Solid oxide fuel cell with transitioned cross-section for improved anode gas management at the open end

Patent Zafred, Paolo R [Murrysville, PA]; Draper, Robert [Pittsburgh, PA]

A solid oxide fuel cell (400) is made having a tubular, elongated, hollow, active section (445) which has a cross-section containing an air electrode (452) a fuel electrode (454) and solid oxide electrolyte (456) between them, where the fuel cell transitions into at least one inactive section (460) with a flattened parallel sided cross-section (462, 468) each cross-section having channels (472, 474, 476) in them which smoothly communicate with each other at an interface section (458).
Full Text Available

Similar Records

Title: Oxygen getters for anode protection in a solid-oxide fuel cell stack

Abstract

Citation Formats

Heat flux meter patent, August 1986

Fuel cell interconnect device patent, August 1999

Fuel cell system with interconnect patent, December 2016

Heat flux meter
patent, August 1986

Fuel cell interconnect device
patent, August 1999

Fuel cell system with interconnect
patent, December 2016