Ping Liu

US Patent:

7233034, Jun 19, 2007

Filed:

Aug 19, 2005

Appl. No.:

11/161874

Inventors:

Ping Liu - Irvine CA, US
C. Edwin Tracy - Golen CO, US
J. Roland Pitts - Lakewood CO, US
Se-Hee Lee - Lakewood CO, US

Assignee:

Midwest Research Institute - Kansas City MO

International Classification:

H01L 27/14

US Classification:

257252, 257 1, 338 34, 422 90, 436144, 73 232, 73 234, 73 3105

Abstract:

A protective coating for a surface comprising a layer permeable to hydrogen, said coating being deposited on a catalyst layer; wherein the catalytic activity of the catalyst layer is preserved.

US Patent:

7910199, Mar 22, 2011

Filed:

Jul 7, 2008

Appl. No.:

12/168830

Inventors:

Adam F. Gross - Los Angeles CA, US
John J. Vajo - West Hills CA, US
Robert W. Cumberland - Malibu CA, US
Ping Liu - Irvine CA, US
Tina T. Salguero - Encino CA, US

Assignee:

HRL Laboratories, LLC - Malibu CA

International Classification:

B32B 3/26

US Classification:

4283128, 4283044, 4283191, 428457, 428689, 623 1111

Abstract:

A porous carbon scaffold with a surface and pores, the porous carbon scaffold containing a primary metal and a secondary metal, where the primary metal is a metal that does not wet the surface of the pores of the carbon scaffold but wets the surface of the secondary metal, and the secondary metal is interspersed between the surface of the pores of the carbon scaffold and the primary metal.

US Patent:

7927507, Apr 19, 2011

Filed:

Mar 13, 2009

Appl. No.:

12/404201

Inventors:

Wen Li - El Segundo CA, US
John J. Vajo - West Hills CA, US
Robert W. Cumberland - Malibu CA, US
Ping Liu - Irvine CA, US

Assignee:

HRL Laboratories, LLC - Malibu CA

International Classification:

C09K 3/00
C02F 5/08

US Classification:

25218233, 166 50, 166 57, 166 58, 166 59, 166302, 423413

Abstract:

Compositions for hydrogen storage and methods of making such compositions employ an alloy that exhibits reversible formation/deformation of BH anions. The composition includes a ternary alloy including magnesium, boron and a metal and a metal hydride. The ternary alloy and the metal hydride are present in an amount sufficient to render the composition capable of hydrogen storage. The molar ratio of the metal to magnesium and boron in the alloy is such that the alloy exhibits reversible formation/deformation of BH anions. The hydrogen storage composition is prepared by combining magnesium, boron and a metal to prepare a ternary alloy and combining the ternary alloy with a metal hydride to form the hydrogen storage composition.

US Patent:

7977012, Jul 12, 2011

Filed:

Apr 23, 2009

Appl. No.:

12/429164

Inventors:

Wen Li - El Segundo CA, US
Ping Liu - Irvine CA, US
Jennifer J. Zinck - Calabasas CA, US
Chaoyin Zhou - Chino CA, US
Tina T. Salguero - Encino CA, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

H01M 8/02
H01M 4/64
H01B 1/24
B05D 5/12

US Classification:

429518, 429521, 429535, 252506, 427115

Abstract:

A method of coating a surface of a fuel cell plate is disclosed herein. The method involves forming a sol gel mixture including a metal oxide modified with at least one functional group, where the at least one functional group is configured to improve adhesion; and adding carbon modified with a hydrophilic functional group to the mixture, thereby forming a suspension. The suspension is applied to the surface of the fuel cell plate, and is activated to form a porous, hydrophilic, and conductive film on the surface of the fuel cell plate.

US Patent:

8309240, Nov 13, 2012

Filed:

Feb 28, 2009

Appl. No.:

12/395638

Inventors:

Wen Li - El Segundo CA, US
Ping Liu - Irvine CA, US

Assignee:

HRL Laboratories, LLC - Malibu CA

International Classification:

H01M 10/52

US Classification:

429 57, 429122, 296231

Abstract:

This invention provides a battery, such as a lithium-ion battery, that includes an encapsulated fire-retardant material. In some embodiments, stable polymer spheres are used to encapsulate an effective fire-retardant material. Under normal operating conditions, the fire-retardant material does not contact the electrolyte, cathode, or anode, thus minimizing performance reduction that occurs when fire-retardant materials are in the direct presence of the electrolyte. Under thermal runaway or excessive temperatures, the fire retardant material vaporizes through the melted encapsulating phase, thereby releasing fire-retardant material to minimize or prevent flammability in the battery.

US Patent:

8349517, Jan 8, 2013

Filed:

Apr 23, 2009

Appl. No.:

12/429161

Inventors:

Wen Li - El Segundo CA, US
Ping Liu - Irvine CA, US
Jennifer J. Zinck - Calabasas CA, US
Tina T. Salguero - Encino CA, US
Richard H. Blunk - Macomb Township MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

H01M 4/64

US Classification:

429518, 429456, 429457, 429517, 429519, 429520, 429521, 429522, 429535, 427115, 427343, 25251933, 25251934

Abstract:

A method of coating a surface of a fuel cell plate is disclosed herein, and involves forming a sol gel mixture by mixing a weak acid and a composition including at least two metal oxide precursors. One of the metal oxide precursors is configured to be hydrolyzed by the weak acid to form a mixed metal oxide framework with an other of the metal oxide precursors having at least one organic functional group that is not hydrolyzed by the weak acid. The mixture is applied to the surface, and is condensed by exposure to air at least one predetermined temperature and for a predetermined time. The sol gel mixture is immersed in water at a predetermined temperature and for a predetermined time to form a porous, hydrophilic, and conductive film on the surface.

US Patent:

8481195, Jul 9, 2013

Filed:

Apr 14, 2010

Appl. No.:

12/759720

Inventors:

Ping Liu - Irvine CA, US

Assignee:

HRL Laboratories, LLC - Malibu CA

International Classification:

H01M 10/0562

US Classification:

429144, 429129, 429145, 429188, 429247

Abstract:

This invention provides a novel battery structure that, in some variations, utilizes a mixed lithium-ion and electron conductor as part of the separator. This layer is non-porous, conducting only lithium ions during operation, and may be structurally free-standing. Alternatively, the layer can be used as a battery electrode in a lithium-ion battery, wherein on the side not exposed to battery electrolyte, a chemical compound is used to regenerate the discharged electrode. This battery structure overcomes critical shortcomings of current lithium-sulfur, lithium-air, and lithium-ion batteries.

US Patent:

8531158, Sep 10, 2013

Filed:

Nov 1, 2010

Appl. No.:

12/916735

Inventors:

John S. Wang - Los Angeles CA, US
Ping Liu - Irvine CA, US
Shuoqin Wang - Westlake CA, US
Souren Soukiazian - Burbank CA, US
Mark W. Verbrugge - Troy MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

H02J 7/00

US Classification:

320132

Abstract:

A method for monitoring a lithium-ion battery cell includes monitoring a battery cell voltage and a corresponding state of charge of the battery cell during an electric power event which may include either an electric power charge event or an electric power discharge event. A measured potential-derivative is determined by differentiating the battery cell voltage in relation to the corresponding state of charge of the battery during the electric power event. The measured potential-derivative is compared with a preferred anode potential-derivative of an anode charge curve (for electric power discharge events) or an anode discharge curve (for electric power charge events), and with a preferred cathode potential-derivative of a cathode charge curve (for electric power charge events) or a cathode discharge charge curve (for electric power discharge events). A first state of health parameter of the battery cell corresponding to the comparison of the measured potential-derivative with the preferred anode potential-derivative of the anode curve is determined. And, a second state of health parameter of the battery cell corresponding to the comparison of the measured potential-derivative with the preferred cathode potential-derivative of the cathode curve is determined.