James M Ralph

US Patent:

7157165, Jan 2, 2007

Filed:

Nov 18, 2003

Appl. No.:

10/716331

Inventors:

James M. Ralph - Downers Grove IL, US
Cècile C.R. Rossignol - Lyons, FR
John T. Vaughey - Elmhurst IL, US

Assignee:

UChicago Argonne, LLC - Chicago IL

International Classification:

H01M 8/00

US Classification:

429 12, 429 30, 429 32, 429 33

Abstract:

An A and/or A′ site deficient perovskite of general formula of (AA′)FeO or of general formula AA′FeO, wherein A is La alone or with one or more of the rare earth metals or a rare earth metal other than Ce alone or a combination of rare earth metals and X is in the range of from 0 to about 1; A′ is Sr or Ca or mixtures thereof and Y is in the range of from about 0. 01 to about 0. 3; δ represents the amount of compensating oxygen loss. If either A or A′ is zero the remaining A or A′ is deficient. A fuel cell incorporating the inventive perovskite as a cathode is disclosed as well as an oxygen separation membrane. The inventive perovskite is preferably single phase.

US Patent:

7632593, Dec 15, 2009

Filed:

Apr 18, 2006

Appl. No.:

11/406097

Inventors:

John David Carter - Bolingbrook IL, US
Joong-Myeon Bae - Daejon, KR
Terry Alan Cruse - Lisle IL, US
James Michael Ralph - Fairlawn OH, US
Deborah J. Myers - Lisle IL, US

Assignee:

UChicago Argonne, LLC - Chicago IL

International Classification:

H01M 2/08

US Classification:

429 35, 429 38

Abstract:

A bipolar plate supported solid oxide fuel cell with a sealed anode compartment is provided. The solid oxide fuel cell includes a cathode, an electrolyte, and an anode, which are supported on a metallic bipolar plate assembly including gas flow fields and the gas impermeable bipolar plate. The electrolyte and anode are sealed into an anode compartment with a metal perimeter seal. An improved method of sealing is provided by extending the metal seal around the entire perimeter of the cell between an electrolyte and the bipolar plate to form the anode compartment. During a single-step high temperature sintering process the metal seal bonds to the edges of the electrolyte and anode layers, the metal foam flow field and the bipolar plate to form a gastight containment.

US Patent:

20030232230, Dec 18, 2003

Filed:

Jun 12, 2002

Appl. No.:

10/167917

Inventors:

John Carter - Bolingbrook IL, US
Terry Cruse - Lisle IL, US
James Ralph - Chicago IL, US
Romesh Kumar - Naperville IL, US
Michael Krumpelt - Naperville IL, US

International Classification:

H01M008/12
H01M008/24

US Classification:

429/032000, 429/038000, 264/618000

Abstract:

A solid oxide fuel cell (SOFC) repeat unit includes an oxide electrolyte, an anode, a metallic fuel flow field, a metallic interconnect, and a metallic air flow field. The multilayer laminate is made by casting tapes of the different functional layers, laminating the tapes together and sintering the laminate in a reducing atmosphere. Solid oxide fuel cell stacks are made by applying a cathode layer, bonding the unit into a gas manifold plate, and then stacking the cells together. This process leads to superior mechanical properties in the SOFC due to the toughness of the supporting metallic layers. It also reduces contact resistances in stacking the cells since there is only one physical contact plane for each repeat unit.

US Patent:

20100064508, Mar 18, 2010

Filed:

Nov 11, 2009

Appl. No.:

12/616186

Inventors:

John David Carter - Bolingbrook IL, US
Joong-Myeon Bae - Daeion, KR
Terry Alan Cruse - Lisle IL, US
James Michael Ralph - Fairlawn OH, US
Deborah J. Myers - Lisle IL, US

Assignee:

UCHICAGO ARGONNE, LLC - Chicago IL

International Classification:

H01M 8/10

US Classification:

296232

Abstract:

Methods of sealing a bipolar plate supported solid oxide fuel cell with a sealed anode compartment are provided. The solid oxide fuel cell includes a cathode, an electrolyte, and an anode, which are supported on a metallic bipolar plate assembly including gas flow fields and the gas impermeable bipolar plate. The electrolyte and anode are sealed into an anode compartment with a metal perimeter seal. An improved method of sealing is provided by extending the metal seal around the entire perimeter of the cell between an electrolyte and the bipolar plate to form the anode compartment. During a single-step high temperature sintering process the metal seal bonds to the edges of the electrolyte and anode layers, the metal foam flow field and the bipolar plate to form a gastight containment.