Terje Asbjorn Skotheim

US Patent:

6406814, Jun 18, 2002

Filed:

Oct 31, 2000

Appl. No.:

09/703348

Inventors:

Alexander Gorkovenko - Tucson AZ
Terje A. Skotheim - Tucson AZ
Leonid I. Boguslavsky - Tucson AZ
Zhongyi Deng - Tucson AZ
Shyama P. Mukherjee - Tucson AZ

Assignee:

Moltech Corporation - Tucson AZ

International Classification:

H01M 404

US Classification:

429213, 4292181, 296231

Abstract:

The present invention pertains to solid composite cathodes which comprise (a) an electroactive sulfur-containing cathode material which, in its oxidized state, comprises a polysulfide moiety of the formula, âS â, wherein m is an integer from 3 to 10; and (b) a non-electroactive particulate material having a strong adsorption of soluble polysulfides. The present invention also pertains to electric current producing cells comprising such solid composite cathodes, and methods of making such solid composite cathodes and electric current producing cells.

US Patent:

6410182, Jun 25, 2002

Filed:

Aug 18, 2000

Appl. No.:

09/641539

Inventors:

Qicong Ying - Tucson AZ
Steven A. Carlson - Cambridge MA
Terje A. Skotheim - Tucson AZ

Assignee:

Moltech Corporation - Tucson AZ

International Classification:

H01M 214

US Classification:

429129, 429144, 429247, 429249, 429251, 429300, 429304

Abstract:

This invention pertains to separators for electrochemical cells which comprise (i) a microporous pseudo-boehmite layer and (ii) a protective coating layer comprising a polymer; electrolyte elements comprising such separators; electrical current producing cells comprising such separators; and methods of making such separators, electrolyte elements and cells.

US Patent:

6423444, Jul 23, 2002

Filed:

Nov 30, 2000

Appl. No.:

09/727160

Inventors:

Qicong Ying - Tucson AZ
Steven A. Carlson - Cambridge MA
Terje A. Skotheim - Tucson AZ

Assignee:

Moltech Corporation - Tucson AR

International Classification:

H01M 214

US Classification:

429129, 429144, 429247, 429249, 429251, 429304

Abstract:

This invention pertains to separators for electrochemical cells which comprise (i) two microporous pseudo-boehmite layers and (ii) a protective coating layer comprising a polymer interposed between the microporous pseudo-boehmite layers; electrolyte elements comprising such separators; electrical current producing cells comprising such separators; and methods of making such separators, electrolyte elements and cells.

US Patent:

6482545, Nov 19, 2002

Filed:

Dec 29, 1999

Appl. No.:

09/474471

Inventors:

Terje A. Skotheim - Tucson AZ
Alexander A. Gorkovenko - Tucson AZ
Alexei B. Gavrilov - Tucson AZ
Igor P. Kovalev - Tucson AZ

Assignee:

Moltech Corporation - Tucson AZ

International Classification:

H01M 462

US Classification:

429217

Abstract:

The present invention pertains to non-aqueous electrolytes which comprise (a) one or more solvents; (b) one or more ionic salts; and, (c) a multifunctional monomer comprising two or more unsaturated aliphatic reactive moieties per molecule, which multifuntional monomer is soluble in said one or more solvents, which multifuctional monomer rapidly polymerizes when said electrolyte is heated to an initiation temperature greater than 100Â C. , thereby increasing said viscosity and internal resistivity of said electrolyte. When incorporated into a nonaqueous electrolyte, the multifunctional reactive monomer improves the safety of electric current producing cells by rapidly polymerizing at elevated temperatures to increase the viscosity and internal resistivity of the electrolyte. The present invention also pertains to electric current producing cells comprising such non-aqueous electrolytes, methods of making such non-aqueous electrolytes and electric current producing cells, and methods for increasing the safety of an electric current producing cell.

US Patent:

6569573, May 27, 2003

Filed:

Nov 10, 2000

Appl. No.:

09/709242

Inventors:

Yuriy V. Mikhaylik - Tucson AZ
Terje A. Skotheim - Tucson AZ
Boris A. Trofimov - Irkutsk, RU

Assignee:

Moltech Corporation - Tucson AZ

International Classification:

H01M 1040

US Classification:

429324, 429326, 429213, 296231

Abstract:

Provided is a lithium battery in which the cathode comprises an electroactive sulfur-containing material and the electrolyte comprises a lithium salt, a non-aqueous solvent, and one or more capacity-enhancing reactive components. Suitable reactive components include electron transfer mediators of the formula: wherein: R is the same or different at each occurrence and is selected from the group consisting of H, alkyl, alkenyl, aryl, or substituted derivatives thereof; E is the same or different at each occurrence and is selected from the group consisting of O, NR , and S; where R is alkyl, aryl, or substituted derivatives thereof; a is an integer from 0 to 1; and r is an integer from 2 to 5. Also are provided methods for making the lithium battery.

US Patent:

6706449, Mar 16, 2004

Filed:

Dec 18, 2001

Appl. No.:

10/025651

Inventors:

Yuriy V. Mikhaylik - Tucson AZ
Christopher J. Sheehan - Tucson AZ
Terje A. Skotheim - Tucson AZ

Assignee:

Moltech Corporation - Tucson AZ

International Classification:

H01M 216

US Classification:

429246, 429208, 42923195, 429232, 429233, 429245

Abstract:

Provided are anodes for use in electrochemical cells, wherein the anode comprises an anode active layer comprising lithium and a polymer anode substrate comprising a polymer film layer and a protective crosslinked polymer layer, in which the protective crosslinked polymer layer is in contact with the anode active layer on the side opposite to the surface in contact with the polymer film layer. The present invention also pertains to methods for forming such anodes and electrochemical cells comprising such anodes.

US Patent:

6733924, May 11, 2004

Filed:

Nov 21, 2000

Appl. No.:

09/721519

Inventors:

Terje A. Skotheim - Tucson AZ
Christopher J. Sheehan - Tucson AZ
Yuriy V. Mikhaylik - Tucson AZ

Assignee:

Moltech Corporation - Tucson AZ

International Classification:

H01M 614

US Classification:

42923195

Abstract:

Provided are lithium anodes for use in electrochemical cells, where the anode active layer has a first layer comprising lithium metal and a second layer of a temporary protective material, wherein the temporary protective material is a metal capable of forming an alloy with lithium metal or is capable of diffusing into lithium metal. The present invention also pertains to electrochemical cells comprising such anodes.

US Patent:

6797428, Sep 28, 2004

Filed:

Nov 21, 2000

Appl. No.:

09/721578

Inventors:

Terje A. Skotheim - Tucson AZ
Christopher J. Sheehan - Tucson AZ
Yuriy V. Mikhaylik - Tucson AZ
John Affinito - Tucson AZ

Assignee:

Moltech Corporation - Tucson AZ

International Classification:

H01M 604

US Classification:

429126, 42923195, 429216

Abstract:

Provided is an anode for use in electrochemical cells, wherein the anode active layer has a first layer comprising lithium metal and a multi-layer structure comprising single ion conducting layers and crosslinked polymer layers in contact with the first layer comprising lithium metal or in contact with an intermediate protective layer, such as a temporary protective metal layer, on the surface of the lithium-containing first layer. The anodes of the current invention are particularly useful in electrochemical cells comprising sulfur-containing cathode active materials, such as elemental sulfur.