Jeffrey L Phillips

US Patent:

RE40727, Jun 9, 2009

Filed:

Nov 9, 2006

Appl. No.:

11/598153

Inventors:

Jeffrey Phillips - La Jolla CA, US

Assignee:

PowerGenix Systems, Inc. - Yukon

International Classification:

H01M 4/48

US Classification:

429231, 429229, 429223, 429232, 429206, 429207, 429209

Abstract:

A nickel zinc alkaline cell has a zinc oxide negative electrode supported on a conductive substrate, an alkaline electrolyte, and a positive electrode having nickel hydroxide paste supported on a conductive substrate. The negative zinc oxide electrode comprises 85% to 95% zinc oxide powder, 1% to 10% bismuth oxide, 1% to 2% of a binder, and 0. 05% to 5% by weight of a fluoride salt chosen from the group consisting of: sodium, potassium, rubidium, caesium, lithium, and mixtures thereof. Typically, the fluoride salt is potassium fluoride, in the amount of 0. 5% by weight of the zinc oxide.

US Patent:

7550230, Jun 23, 2009

Filed:

Feb 1, 2006

Appl. No.:

11/346861

Inventors:

Jeffrey Phillips - La Jolla CA, US
Samaresh Mohanta - San Diego CA, US

Assignee:

PowerGenix Systems, Inc. - San Diego CA

International Classification:

H01M 6/04

US Classification:

429206, 429229, 429231, 429223, 429207, 429347

Abstract:

Electrodes and electrolytes for nickel-zinc secondary battery cells possess compositions that limit dendrite formation and other forms of material redistribution in the zinc electrode. In addition, the electrolytes may possess one or more of the following characteristics: good performance at low temperatures, long cycle life, low impedance and suitability for high rate applications.

US Patent:

7816030, Oct 19, 2010

Filed:

Jun 1, 2009

Appl. No.:

12/476166

Inventors:

Jeffrey Phillips - La Jolla CA, US
Samaresh Mohanta - San Diego CA, US

Assignee:

Powergenix Systems, Inc. - San Diego CA

International Classification:

H01M 6/04

US Classification:

429206, 429229, 429231, 429223, 429207, 429347

Abstract:

Electrodes and electrolytes for nickel-zinc secondary battery cells possess compositions that limit dendrite formation and other forms of material redistribution in the zinc electrode. In addition, the electrolytes may possess one or more of the following characteristics: good performance at low temperatures, long cycle life, low impedance and suitability for high rate applications.

US Patent:

8048558, Nov 1, 2011

Filed:

Mar 25, 2009

Appl. No.:

12/411282

Inventors:

Jeffrey Phillips - La Jolla CA, US
Franz Josef Kruger - Frankenthal, DE
Samaresh Mohanta - San Diego CA, US
Sean Clinton - San Diego CA, US
Ernest M. Rimanosky - San Diego CA, US
Jason Zhao - Suisun City CA, US
Cecilia Maske - San Diego CA, US
Zheng Gang Fan - Shenzhen, CN

Assignee:

PowerGenix Systems, Inc. - San Diego CA

International Classification:

H01M 2/02
H01M 2/00
H01M 6/04
H01M 2/12

US Classification:

429166, 429164, 429163, 429178, 429 53, 429188

Abstract:

A nickel-zinc battery cell is formed with a negative can, a positive cap, and a jelly roll of electrochemically active positive and negative materials within. The inner surface of the can is protected with an anticorrosive material that may be coated or plated onto the can. Good electrical contact between the jelly roll and the cap is achieved through folding the nickel substrate over to contact a positive current collection disk.

US Patent:

8501351, Aug 6, 2013

Filed:

May 18, 2009

Appl. No.:

12/467993

Inventors:

Jeffrey Phillips - La Jolla CA, US
Samaresh Mohanta - San Diego CA, US
Cecilia Maske - San Diego CA, US
Deepan Chakkaravarthi Bose - San Diego CA, US
James J. Wu - San Diego CA, US
Bryan L. McKinney - San Diego CA, US

Assignee:

PowerGenix Systems, Inc. - La Jolla CA

International Classification:

H01M 4/00

US Classification:

429226, 429223

Abstract:

Active material for a negative electrode of a rechargeable zinc alkaline electrochemical cell is made with zinc metal particles coated with tin and/or lead. The zinc particles may be coated by adding lead and tin salts to a slurry containing zinc particles, a thickening agent and water. The remaining zinc electrode constituents such as zinc oxide (ZnO), bismuth oxide (BiO), a dispersing agent, and a binding agent such as Teflon are then added. The resulting slurry/paste has a stable viscosity and is easy to work with during manufacture of the zinc electrode. Further, the zinc electrode is much less prone to gassing when cobalt is present in the electrolyte. Cells manufactured from electrodes produced in accordance with this invention exhibit much less hydrogen gassing, by as much as 60-80%, than conventional cells. The cycle life and shelf life of the cells is also enhanced, as the zinc conductive matrix remains intact and shelf discharge is reduced.

US Patent:

20060207084, Sep 21, 2006

Filed:

Mar 1, 2006

Appl. No.:

11/367028

Inventors:

Jeffrey Phillips - La Jolla CA, US
Jason Zhao - Suisun City CA, US

Assignee:

PowerGenix, Inc. - San Diego CA

International Classification:

H01M 10/04

US Classification:

029623100, 029623400

Abstract:

Methods of manufacturing a rechargeable power cell are described. Methods include providing a slurry, paste, or dry mixture of negative electrode materials having low toxicity and including dispersants to prevent the agglomeration of particles that may adversely affect the performance of power cells. The methods utilize semi-permeable sheets to separate the electrodes and minimize formation of dendrites; and further provide electrode specific electrolyte to achieve efficient electrochemistry and to further discourage dendritic growth in the cell. The negative electrode materials may be comprised of zinc and zinc compounds. Zinc and zinc compounds are notably less toxic than the cadmium used in nickel cadmium batteries. The described methods may utilize some production techniques employed in existing NiCad production lines. Thus, the methods described will find particular use in an already well-defined and mature manufacturing base.

US Patent:

20060240317, Oct 26, 2006

Filed:

Apr 26, 2005

Appl. No.:

11/116113

Inventors:

Jeffrey Phillips - La Jolla CA, US
Samaresh Mohanta - San Diego CA, US
Zheng Fan - Shezhen, CN
Chi Yau - Escondido CA, US
Lou Uzel - San Diego CA, US

Assignee:

PowerGenix Systems, Inc. - San Diego CA

International Classification:

H01M 2/16
H01M 4/64
H01M 2/02
H01M 2/26

US Classification:

429144000, 429233000, 429164000, 429161000

Abstract:

Nickel zinc cylindrical battery cell designs are described. The designs provided limit dendrite formation and prevent build up of hydrogen gas in the cell. The present invention also provides low-impedance cells required by rapid discharge applications. The cylindrical battery cells may have polarity opposite of that of conventional power cells, with a negative cap and positive can. The cylindrical cells may include a gel electrolyte reservoir.

US Patent:

20080163478, Jul 10, 2008

Filed:

Oct 26, 2007

Appl. No.:

11/978213

Inventors:

Jeffrey Phillips - La Jolla CA, US
Jason Zhao - Suisun City CA, US

Assignee:

PowerGenix Systems, Inc. - San Diego CA

International Classification:

H01M 6/02

US Classification:

296235

Abstract:

Methods of manufacturing a rechargeable power cell are described. Methods include providing a slurry, paste, or dry mixture of negative electrode materials having low toxicity and including dispersants to prevent the agglomeration of particles that may adversely affect the performance of power cells. The methods utilize semi-permeable sheets to separate the electrodes and minimize formation of dendrites; and further provide electrode specific electrolyte to achieve efficient electrochemistry and to further discourage dendritic growth in the cell. The negative electrode materials may be comprised of zinc and zinc compounds. Zinc and zinc compounds are notably less toxic than the cadmium used in nickel cadmium batteries. The described methods may utilize some production techniques employed in existing NiCad production lines. Thus, the methods described will find particular use in an already well-defined and mature manufacturing base.