Michael M Day

US Patent:

7736787, Jun 15, 2010

Filed:

Sep 6, 2005

Appl. No.:

11/220361

Inventors:

Michael J. Day - Dublin OH, US
J. Michael Funk - Glouster OH, US
Todd G. Lesousky - Columbus OH, US
Matthew M. Seabaugh - Columbus OH, US

Assignee:

NexTech Materials, Ltd. - Lewis Center OH

International Classification:

H01M 2/08
H01M 8/10

US Classification:

429 35, 429 30, 429 32

Abstract:

Ceramic membranes with integral seals and support, and related electrochemical cells and cell stacks. The membrane comprises a thin electrolyte layer supported on a porous electrode layer which in turn is supported on a thick ceramic support layer, preferably a ceramic electrolyte support. The support layer is divided into a plurality of self-supporting thin membrane regions by a network of thicker integrated support ribs. The thin electrolyte layer and thick ceramic support layer preferably define a sealing perimeter surrounding the porous electrode layer.

US Patent:

7767358, Aug 3, 2010

Filed:

May 31, 2005

Appl. No.:

11/141259

Inventors:

Matthew M. Seabaugh - Columbus OH, US
Katarzyna Sabolsky - Westerville OH, US
Edward M. Sabolsky - Westerville OH, US
Michael J. Day - Dublin OH, US

Assignee:

NexTech Materials, Ltd. - Lewis Center OH

International Classification:

H01M 8/10
H01M 6/04
H01M 6/18
H01M 8/24

US Classification:

429483, 429188, 429304, 429452, 429481, 429484, 429491

Abstract:

A dense ceramic electrolyte membrane supported by symmetrical porous ceramic electrolyte layers. The thin (t

US Patent:

7871735, Jan 18, 2011

Filed:

Oct 29, 2004

Appl. No.:

10/977318

Inventors:

Matthew M. Seabaugh - Columbus OH, US
Katarzyna Sabolsky - Westerville OH, US
Michael J. Day - Dublin OH, US

Assignee:

Nextech Materials, Ltd. - Lewis Center OH

International Classification:

H01M 8/10
H01M 6/04
B05D 5/12

US Classification:

429491, 429188, 427115

Abstract:

Ceramic laminate structures, particularly laminate structures including stabilized zirconia compositions, as well as electrodes and electrochemical cells including such laminate structures. The stabilized zirconia composition preferably are selected from scandia-stabilized zirconia and yttria-stabilized zirconia. These laminate structures enhance the overall flexural strength of the electrolyte layer while preserving high electrical conductivity. Such laminate structures may be useful in electrochemical fuel cells such as solid oxide fuel cells.

US Patent:

8192888, Jun 5, 2012

Filed:

Apr 19, 2005

Appl. No.:

11/109471

Inventors:

Michael J. Day - Dublin OH, US
Katarzyna Sabolsky - Westerville OH, US
Todd G. Lesousky - Columbus OH, US
Matthew M. Seabaugh - Columbus OH, US

Assignee:

NexTech Materials, Ltd. - Lewis Center OH

International Classification:

H01M 8/12

US Classification:

429465, 429481, 429482, 429533, 429535

Abstract:

Self-supporting thin film membranes of ceramic materials and related electrochemical cells and cell stacks. The membrane structure is divided into a plurality of self-supporting thin membrane regions by a network of thicker integrated support ribs. The membrane structure may be prepared by laminating a thin electrolyte layer with a thicker ceramic layer that forms a network of support ribs.

US Patent:

20070180689, Aug 9, 2007

Filed:

Feb 8, 2006

Appl. No.:

11/349733

Inventors:

Michael J. Day - Dublin OH, US
Matthew M. Seabaugh - Columbus OH, US

International Classification:

H01M 10/04
C04B 35/64
B05D 5/12

US Classification:

296235, 264618, 4271263, 427115

Abstract:

A family of spray suspensions for aerosol deposition of green ceramic layers that subsequently can be sintered to produce both dense and porous ceramic layers. The suspensions comprise a nonazeotropic solvent mixture, a ceramic powder, a dispersant, and a an organic binder. The invention also includes methods for depositing coatings of these ceramic suspensions on a substrate, either singly or sequentially, to form electrochemically efficient multilayer structures that can be economically co-sintered. The suspensions and deposition approach allow formation of thin layers of varying microstructure and composition in the sintered state. The suspensions and deposition approach are likely to be useful in the fabrication of electrochemical devices.

US Patent:

20090148742, Jun 11, 2009

Filed:

Dec 7, 2007

Appl. No.:

12/001062

Inventors:

Michael J. Day - Dublin OH, US
Scott L. Swartz - Columbus OH, US
Matthew M. Seabaugh - Columbus OH, US
Paul H. Matter - Columbus OH, US
Jared R. Archer - Marysville OH, US

International Classification:

H01M 8/10
H01M 4/58

US Classification:

429 33, 429223, 429220, 429304

Abstract:

Electrode materials systems for planar solid oxide fuel cells with high electrochemical performance including anode materials that provide exceptional long-term durability when used in reducing gases and cathode materials that provide exceptional long-term durability when used in oxygen-containing gases. The anode materials may comprise a cermet in which the metal component is a cobalt-nickel alloy. These anode materials provide exceptional long-term durability when used in reducing gases, e.g., in SOFCs with sulfur contaminated fuels. The cermet also may comprise a mixed-conducting ceria-based electrolyte material. The anode may have a bi-layer structure. A cerium oxide-based interfacial layer with mixed electronic and ionic conduction may be provided at the electrolyte/anode interface.

US Patent:

20090148743, Jun 11, 2009

Filed:

Dec 7, 2007

Appl. No.:

12/001072

Inventors:

Michael J. Day - Dublin OH, US
Scott L. Swartz - Columbus OH, US
Matthew M. Seabaugh - Columbus OH, US
Kellie M. Chenault - Westerville OH, US

International Classification:

H01M 8/10
H01M 4/36

US Classification:

429 33, 4292181, 429 30

Abstract:

Electrode materials systems for planar solid oxide fuel cells with high electrochemical performance including anode materials that provide exceptional long-term durability when used in reducing gases and cathode materials that provide exceptional long-term durability when used in oxygen-containing gases. The cathode materials comprise zinc-doped lanthanum strontium ferrite (LSZF) or an alternative ferrite, cobaltite or nickelate ceramic electrode material. The cathode material also may comprise a mixed-conducting ceria-based electrolyte material, a palladium dopant, or a combination of these. The cathode may have a bi-layer structure. A ceramic-based interfacial layer may be provided at the electrolyte/cathode interface. The multilayer cathode system and its palladium doped cathode material exhibit a high degree of tolerance to chromium contamination during operation with metallic interconnect materials.

US Patent:

20090218220, Sep 3, 2009

Filed:

Mar 2, 2009

Appl. No.:

12/395998

Inventors:

Paul J. Matter - Columbus OH, US
Matthew M. Seabaugh - Columbus OH, US
Lora B. Thrun - Grove City OH, US
Scott L. Swartz - Columbus OH, US
Michael J. Day - Dublin OH, US
William J. Dawason - Dublin OH, US
Buddy E. McCormick - Dublin OH, US

International Classification:

G01N 27/26

US Classification:

204424

Abstract:

Amperometric ceramic electrochemical cells comprise, in one embodiment, an electrolyte layer, a sensing electrode layer, and a counter electrode layer, wherein the cell is operable in an oxidizing atmosphere and under an applied bias to exhibit enhanced reduction of oxygen molecules at the sensing electrode in the presence of one or more target gases such as nitrogen oxides (NO) or NHand a resulting increase in oxygen ion flux through the cell. In another embodiment, amperometric ceramic electrochemical cells comprise an electrolyte layer comprising a continuous network of a first material which is ionically conducting at an operating temperature of about 200 to 550 C.; a counter electrode layer comprising a continuous network of a second material which is electrically conductive at an operating temperature of about 200 to 550 C.; and a sensing electrode layer comprising a continuous network of a third material which is electrically conductive at an operating temperature of about 200 to 550 C., which sensing electrode is operable to exhibit increased charge transfer in the presence of one or more target gas species. These electrochemical cells and additional electrochemical cell embodiments are suitable for use in gas sensors and methods of sensing or detecting one or more target gases.