IP Library › Granted Patent US 12,191,508
Granted Patent B2
US 12,191,508 · App. 18/104,559 · Granted Jan 7, 2025

Cylindrical lithium-sulfur battery

Inventor: Jerzy Gazda (Austin, TX)
Assignee: Lyten, Inc.
H01M50/162H01M4/382H01M4/58H01M4/625H01M4/661H01M4/663H01M10/0525H01M10/0587H01M50/159H01M50/169H01M50/434H01M50/572H01M2004/021H01M2004/027H01M2004/028
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Quick Facts
Patent No.
US 12,191,508
App. No.
18/104,559
Granted
Jan 7, 2025
Kind
B2
Abstract

A lithium-sulfur battery includes a casing, a top lid circumferentially welded to the casing, a negative contact surface positioned opposite the top lid, a positive terminal disposed within the casing, welded to the top lid, and configured as a mandrel, a glass insulator circumferentially wound around the mandrel, and a jelly roll including at least an anode and a cathode wound around the mandrel. The jelly roll may also include a top surface not in contact with the top lid, a bottom surface partially in contact with the negative contact surface, and partially in contact with a plurality of non-hollow carbonaceous spherical particles disposed between the bottom surface of the jelly roll and the negative contact surface. At least some of the non-hollow carbonaceous spherical particles may provide one or more electrically-conductive pathways between the bottom surface and the negative contact surface.

Claims (24)

1. A lithium-sulfur battery comprising:

a cylindrical casing including a lid circumferentially welded to the casing, and including a negative contact surface disposed opposite to the lid;

a cylindrical jelly roll wound around a mandrel, wherein the jelly roll comprises:

an anode laminated sheet including an anode active material and an anode current collector;

a cathode laminated sheet including a carbonaceous cathode active material and a cathode current collector; and

a separator disposed between the anode laminated sheet and the cathode laminated sheet;

a positive terminal comprising the mandrel welded length-wise to the cathode current collector and separated from the casing by an insulator disposed in the lid; and

a plurality of non-hollow carbonaceous spherical particles disposed between the jelly roll and the negative contact surface, the plurality of non-hollow carbonaceous spherical particles providing one or more electrically conductive pathways between the anode current collector and the negative contact surface.

2. The lithium-sulfur battery of claim 1 , further comprising an electrolyte disposed between the anode laminated sheet and cathode laminated sheet.

3. The lithium sulfur battery of claim 2 , wherein the electrolyte comprises a liquid phase electrolyte.

4. The lithium-sulfur battery of claim 2 , wherein the electrolyte comprises a gel phase electrolyte.

5. The lithium-sulfur battery of claim 2 , wherein the electrolyte comprises a polymer electrolyte.

6. The lithium-sulfur battery of claim 2 , wherein the electrolyte comprises dimethoxyethane (DME), 1,3-dioxolane (DOL), bis (2,2-trifluoroethyl ether), 0.4M bis (trifluoromethanesulfonyl) imide (LiTFSI), and 2 wt % LiNO 3 .

7. The lithium-sulfur battery of claim 1 , wherein the separator comprises a ceramic separator.

8. The lithium-sulfur battery of claim 1 , wherein the separator comprises a ceramic containing material.

9. The lithium-sulfur battery of claim 1 , wherein the anode active material comprises a lithium metal foil.

10. The lithium-sulfur battery of claim 1 , wherein the anode current collector comprises copper.

11. The lithium-sulfur battery of claim 1 , wherein the carbonaceous cathode active material includes graphite, graphene nanoplatelets adjoined to one another, spherical fullerenes, carbon nano onions (CNOs), amorphous carbon, or any combination thereof.

12. The lithium-sulfur battery of claim 1 , wherein the carbonaceous cathode active material comprises one or more films of interconnected agglomerates of non-hollow spherical carbon particles.

13. The lithium-sulfur battery of claim 1 , wherein the carbonaceous cathode active material comprises one or more films of interconnected agglomerates of tri-zone carbon particles.

14. The lithium-sulfur battery of claim 13 , wherein the tri-zone particles include carbonaceous fragments nested within each other and separated from adjacent carbonaceous fragments by mesopores.

15. The lithium sulfur battery of claim 1 , wherein sulfur is micro-confined in the carbonaceous cathode active material.

16. The lithium-sulfur battery of claim 1 , wherein the cathode current collector comprises aluminum.

17. The lithium-sulfur battery of claim 1 , wherein the casing is formed from one or more of aluminum or steel.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 1, 2023
From: GAZDA, JERZY
To: LYTEN, INC.
Reel/Frame 062563/0068 →
Continuity (11)
Continuation 17726774 · Apr 22, 2022
Continuation In Part 17709156 · Mar 30, 2022
Continuation In Part 17694407 · Mar 14, 2022
Continuation In Part 17672960 · Feb 16, 2022
Continuation In Part 17666753 · Feb 8, 2022
Continuation In Part 17584666 · Jan 26, 2022
Continuation In Part 17578240 · Jan 18, 2022
Continuation In Part 17563183 · Dec 28, 2021
Continuation In Part 17383803 · Jul 23, 2021
Provisional Application 63235892 · Aug 23, 2021
Related Publication 20230187744A1 · Jun 15, 2023
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