Lithium-conducting sulfur compound cathode for lithium-sulfur batteries

• US 9,466,834 B2
• Filed: 08/23/2013
• Issued: 10/11/2016
• Est. Priority Date: 08/23/2013
• Status: Active Grant

• Current Assignee: UT-Battelle LLC
• Original Assignee: UT-Battelle LLC
• Inventors: Liang, Chengdu, Dudney, Nancy J., Lin, Zhan, Liu, Zengcai
• Primary Examiner(s): WEINER, LAURA S
• Application Number:
  US13/974,854
• Publication Number:
  US 20150056496A1
• Time in Patent Office: 1,145 Days
• US Class Current: 1/1
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 10/0562 Solid materials
• CPC Class Codes: H01M 10/058 Construction or manufacture
• CPC Class Codes: H01M 2004/028 Positive electrodes
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H01M 2300/0068 inorganic
• CPC Class Codes: H01M 2300/0071 Oxides
• CPC Class Codes: H01M 4/0407 by coating on an electrolyte layer
• CPC Class Codes: H01M 4/136 Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
• CPC Class Codes: H01M 4/1397 of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
• CPC Class Codes: H01M 4/5815 Sulfides
• CPC Class Codes: H01M 4/622 being polymers
• CPC Class Codes: H01M 4/625 Carbon or graphite
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A lithium sulfur cell has a cathode including Li₃PS_4+n(0<n<9), an electrolyte, and an anode comprising lithium. A cathode for a lithium sulfur cell is also disclosed.

Claims

1. A lithium sulfur cell, comprising:

a cathode comprising Li₃PS_4+n(0<

n<

9, wherein n is an integer);

an electrolyte; and

an anode comprising lithium.

2. The lithium sulfur cell of claim 1, wherein the cathode comprises Li₃PS₅.

3. The lithium sulfur cell of claim 1, wherein the cathode comprises Li₃PS₆.

4. The lithium sulfur cell of claim 1, wherein the cathode comprises Li₃PS₇.

5. The lithium sulfur cell of claim 1, wherein the cathode comprises Li₃PS₈.

6. The lithium sulfur cell of claim 1, wherein the cathode comprises Li₃PS₉.

7. The lithium sulfur cell of claim 1, wherein the cathode comprises Li₃PS₁₀.

8. The lithium sulfur cell of claim 1, wherein the cathode comprises Li₃PS₁₁.

9. The lithium sulfur cell of claim 1, wherein the cathode comprises Li₃PS₁₂.

10. The lithium sulfur cell of claim 1, wherein the electrolyte comprises at least one selected from the group consisting of lithium thiophosphate, lithium lanthanum zirconium oxide, lithium lanthanum titanium oxide, lithium boron hydride, and lithium iodide, and combinations thereof.

11. A cathode for a lithium sulfur cell, comprising Li₃PS_4+n(0<

n<

9, wherein n is an integer).

12. The cathode of claim 11, comprising Li₃PS₅.

13. The cathode of claim 11, comprising Li₃PS₆.

14. The cathode of claim 11, comprising Li₃PS₇.

15. The cathode of claim 11, comprising Li₃PS₈.

16. The cathode of claim 11, comprising Li₃PS₉.

17. The cathode of claim 11, comprising Li₃PS₁₀.

18. The cathode of claim 11, comprising Li₃PS₁₁.

19. The cathode of claim 11, comprising Li₃PS₁₂.