Chang J Lee

US Patent:

6455200, Sep 24, 2002

Filed:

Aug 24, 2000

Appl. No.:

09/645381

Inventors:

Jai Prakash - Naperville IL
Chang Woo Lee - Chicago IL
Khalil Amine - Downers Grove IL

Assignee:

Illinois Institute of Technology - Chicago IL

International Classification:

H01M 458

US Classification:

42923195, 429339, 429203, 429322, 429338, 429336, 429330, 429328

Abstract:

A lithium-ion battery having an anode electrode, a cathode electrode and a non-aqueous solvent lithium electrolyte. At least one cyclophosphazene is added to the non-aqueous solvent lithium electrolyte, which cyclophosphazene acts as a flame-retardant material. The non-aqueous solvent lithium electrolyte is preferably a carbonate-based electrolyte and the preferred cyclophosphazene is hexamethoxycyclotriphosphazene.

US Patent:

42241359, Sep 23, 1980

Filed:

Nov 1, 1978

Appl. No.:

5/956709

Inventors:

Dimitri Gidaspow - Northbrook IL
Chang H. Lee - Chicago IL
Darsh T. Wasan - Westmont IL

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

C10G 3302

US Classification:

204302

Abstract:

A filter for clarifying carbonaceous liquids containing finely divided solid particles of, for instance, unreacted coal, ash and other solids discharged from a coal liquefaction process is presented. The filter includes two passageways separated by a porous filter medium. In one preferred embodiment the filter medium is of tubular shape to form the first passageway and is enclosed within an outer housing to form the second passageway within the annulus. An electrode disposed in the first passageway, for instance along the tube axis, is connected to a source of high voltage for establishing an electric field between the electrode and the filter medium. Slurry feed flows through the first passageway tangentially to the surfaces of the filter medium and the electrode. Particles from the feed slurry are attracted to the electrode within the first passageway to prevent plugging of the porous filter medium while carbonaceous liquid filters into the second passageway for withdrawal. Concentrated slurry is discharged from the first passageway at an end opposite to the feed slurry inlet.

US Patent:

42486866, Feb 3, 1981

Filed:

Dec 6, 1979

Appl. No.:

6/101033

Inventors:

Dimitri Gidaspow - Northbrook IL
Chang H. Lee - Chicago IL
Darsh T. Wasan - Westmont IL

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

B01D 1706
B03C 500

US Classification:

204184

Abstract:

A filter for clarifying carbonaceous liquids containing finely divided solid particles of, for instance, unreacted coal, ash and other solids discharged from a coal liquefaction process is presented. The filter includes two passageways separated by a porous filter medium. In one preferred embodiment the filter medium is of tubular shape to form the first passageway and is enclosed within an outer housing to form the second passageway within the annulus. An electrode disposed in the first passageway, for instance along the tube axis, is connected to a source of high voltage for establishing an electric field between the electrode and the filter medium. Slurry feed flows through the first passageway tangentially to the surfaces of the filter medium and the electrode. Particles from the feed slurry are attracted to the electrode within the first passageway to prevent plugging of the porous filter medium while carbonaceous liquid filters into the second passageway for withdrawal. Concentrated slurry is discharged from the first passageway at an end opposite to the feed slurry inlet.