SODIUM-SULFUR BATTERY WITH A SUBSTANTIALLY NON-POROUS MEMBRANE AND ENHANCED CATHODE UTILIZATION

Title:

SODIUM-SULFUR BATTERY WITH A SUBSTANTIALLY NON-POROUS MEMBRANE AND ENHANCED CATHODE UTILIZATION

Document Type and Number:

WIPO Patent Application WO/2010/107833

Kind Code:

A3

Abstract:

A sodium-sulfur battery (100) is disclosed in one embodiment of the invention as including an anode (102) containing sodium and a cathode (104) comprising elemental sulfur. The cathode (104) may include at least one solvent selected to at least partially dissolve the elemental sulfur and Na2Sx. A substantially non-porous sodium-ion-conductive membrane (106) is provided between the anode (102) and the cathode (104) to keep sulfur or other reactive species from migrating therebetween. In certain embodiments, the sodium-sulfur battery (100) may include a separator between the anode (102) and the non-porous sodium-ion-conductive membrane (106). This separator may prevent the sodium in the anode (102) from reacting with the non-porous sodium-ion-conductive membrane (106). In certain embodiments, the separator is a porous separator infiltrated with a sodium-ion-conductive electrolyte.

Inventors:

GORDON JOHN (US)
WATKINS JOHN (US)

Application Number:

PCT/US2010/027535

Publication Date:

January 13, 2011

Filing Date:

March 16, 2010

Export Citation:

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Assignee:

CERAMATEC INC (US)
GORDON JOHN (US)
WATKINS JOHN (US)

International Classes:

H01M10/39; H01M2/16; H01M4/136; H01M10/0562; H01M10/36; H01M4/58

Foreign References:

US20090061288A1	2009-03-05
KR100651246B1	2006-11-29
US5686201A	1997-11-11

Other References: