Feng Gao

US Patent:

6395431, May 28, 2002

Filed:

Oct 28, 1998

Appl. No.:

09/182392

Inventors:

Feng Gao - Henderson NV
Jeremy Barker - Henderson NV
Hang Shi - Henderson NV
Tracy Kelley - Henderson NV

Assignee:

Valence Technology, Inc. - Henderson NV

International Classification:

H01M 616

US Classification:

429326, 429339

Abstract:

The invention provides an electrochemical cell having an electrolyte which comprises a solute, a solvent, and an additive. The additive is a dialkylamide. The dialkylamide lessens the extent of decomposition of the solute, which is a lithium salt. The ionic species of the lithium salt are thereby preserved. The additive also prevents damage to active material by absorbing excess charge energy below the breakdown potential of the active material.

US Patent:

6503284, Jan 7, 2003

Filed:

May 26, 2000

Appl. No.:

09/579724

Inventors:

Peikang Liu - Henderson NV 89014
Porter Mitchell - Las Vegas NV 89128
Feng Gao - Henderson NV 89014

International Classification:

H01M 462

US Classification:

296231, 429217, 429309, 429314, 429317

Abstract:

Anodes, cathodes, and/or solid electrolytes (or separator layers) of an electrochemical cell can be fabricated from aqueous compositions containing monomers and/or polymers. In one formulation, the aqueous composition contains binding materials that are polymerized and crosslinked. In a second formulation, the composition is a latex having as aqueous phase and a solid polymer phase. Upon removal of water, the compositions provide a polymeric structure suitable for use as an electrode or solid electrolyte.

US Patent:

57801827, Jul 14, 1998

Filed:

Nov 4, 1996

Appl. No.:

8/742398

Inventors:

Jeremy Barker - Henderson NV
Feng Gao - Henderson NV

Assignee:

Valence Technology, Inc. - Henderson NV

International Classification:

H01M 1040

US Classification:

429197

Abstract:

Non-aqueous solid electrochemical cells with improved performance can be fabricated by employing intercalation based carbon anodes comprising graphite, coke, or mixtures thereof, and an electrolyte having an electrolyte solvent formed of propylene carbonate and 4,5-dichloroethylene carbonate. The cells are particularly suited for low temperature applications.

US Patent:

60961015, Aug 1, 2000

Filed:

Mar 5, 1997

Appl. No.:

8/811845

Inventors:

Peikang Liu - Henderson NV
Porter Mitchell - Las Vegas NV
Feng Gao - Henderson NV

Assignee:

Valence Technology, Inc. - Henderson NV

International Classification:

H01M 600
H01M 462

US Classification:

296231

Abstract:

Anodes, cathodes, and/or solid electrolytes (or separator layers) of an electrochemical cell can be fabricated from aqueous compositions containing monomers and/or polymers. In one formulation, the aqueous composition contains binding materials that are polymerized and crosslinked. In a second formulation, the composition is a latex having as aqueous phase and a solid polymer phase. Upon removal of water, the compositions provide a polymeric structure suitable for use as an electrode or solid electrolyte.

US Patent:

59103817, Jun 8, 1999

Filed:

Apr 17, 1997

Appl. No.:

8/843910

Inventors:

Jeremy Barker - Las Vegas NV
Feng Gao - Henderson NV
Arnie Stux - Las Vegas NV

International Classification:

H01M 614

US Classification:

429197

Abstract:

The subject invention discloses a novel electrolyte for a solid battery system. Specifically, an electrolyte solvent of chlorinated diethyl carbonates demonstrate good electrochemical stability in conjunction with specific anode and cathode materials. When used with a propylene carbonate co-solvent, it reduces or eliminates the decomposition of propylene carbonate during the first cycle. It is appropriate with a variety of electrolyte salts, and especially with LiBF. sub. 4. Chloro-substituted diethyl carbonates also show good high and low temperature performance in electrochemical cells.

US Patent:

57597154, Jun 2, 1998

Filed:

Sep 27, 1996

Appl. No.:

8/723195

Inventors:

Jeremy Barker - Henderson NV
Jeffrey L. Swoyer - Henderson NV
Feng Gao - Henderson NV

Assignee:

Valence Technology, Inc. - Henderson NV

International Classification:

H01M 1040

US Classification:

429197

Abstract:

The invention provides an electrochemical cell which is at least partially charged and which comprises a first electrode having an active material in particle form consisting essentially of at least partially lithiated graphite. The lithiated graphite particles are prepared by chemically or electrochemically inserting lithium ions into the particles prior to assembly of the cell. A second electrode which is a counter electrode to the first electrode has an active material consisting essentially of vanadium oxide.

US Patent:

60156392, Jan 18, 2000

Filed:

Jan 30, 1998

Appl. No.:

9/016608

Inventors:

Feng Gao - Henderson NV
Jeremy Barker - Henderson NV
Peikang Liu - Henderson NV

Assignee:

Valence Technology, Inc. - Henderson NV

International Classification:

H01M 618

US Classification:

429307

Abstract:

The invention provides a new family of compounds and a method of making the compounds. The new compounds are useful as ion conductive salts, and particularly useful as salts for batteries. The compounds of the invention are prepared from three principal reagents, bis (trifluoromethanesufonyl) methane (CF. sub. 3 SO. sub. 2). sub. 2 CH. sub. 2 ; benzoyl chloride; and pyridine which facilitates reaction and then is removed. A precursor sodium salt (CF. sub. 3 SO. sub. 2). sub. 2 CHNa is first prepared. Then, equimolar amounts of the precursor sodium salt and pyridine are dissolved in anhydrous acetonitrile. A stoichiometric amount of the selected substitute benzoyl chloride is then added drop by drop. After addition of Li. sub. 3 PO. sub. 4, there is pyridine release and formation of the product of the aforesaid two reagents.

US Patent:

59649038, Oct 12, 1999

Filed:

Apr 23, 1997

Appl. No.:

8/839006

Inventors:

Feng Gao - Henderson NV
Porter H. Mitchell - Las Vegas NV
Jeremy Barker - Henderson NV

Assignee:

Valence Technology, Inc. - Henderson NV

International Classification:

H01M 218
H01M 460

US Classification:

296231

Abstract:

A method of fabricating electrochemical cells employing novel plasticizers that can be removed by evaporation under vacuum is provided thereby obviating the need for solvent extraction. The plasticizers comprise 2-(2-ethoxyethoxy) ethyl acetate, dimethyl adipate, dibutyl phthalate, propylene carbonate, and mixtures thereof.

Address:

4480 Sirius Ave APT 163, Las Vegas, NV 89102

VIN:

1NXBR32E47Z929311

Make:

TOYOTA

Model:

COROLLA

Year:

2007