Immobilized chalcogen and use thereof in a rechargeable battery

Patent metadata

Field	Value
Publication number	US-12406982-B2
Application number	US-202318344221-A
Country	US
Kind code	B2
Filing date	Jun 29, 2023
Priority date	Sep 22, 2015
Publication date	Sep 2, 2025
Grant date	Sep 2, 2025

Abstract

An immobilized chalcogen system or body includes a mixture or combination of chalcogen and carbon. The carbon can be in the form of a carbon skeleton. The chalcogen can include oxygen, sulfur, selenium, or tellurium, or a combination of any two or more of oxygen, sulfur, selenium, and tellurium. The activation energy for chalcogen to escape the immobilized chalcogen system or body is ≥96 kJ/mole.

First claim

The invention claimed is:

1. An immobilized chalcogen system or body comprising a mixture of:
chalcogen, at least 17 wt % of the chalcogen being one of sulfur, oxygen or tellurium; and

a carbon, the carbon having a carbon skeleton that comprises an aromatic conjugated π-bonding system and a deactivation chemical functional group bonded to a carbon atom of the carbon skeleton and withdrawing electrons from the aromatic conjugated π-bonding system, wherein
an activation energy for a chalcogen particle to escape the immobilized chalcogen system or body is ≥96 KJ/mole.

2. The immobilized chalcogen system or body of claim 1 , wherein the activation energy for a chalcogen particle to escape the immobilized chalcogen system or body is ≥99 KJ/mole.

3. The immobilized chalcogen system or body of claim 1 , wherein the activation energy for a chalcogen particle to escape the immobilized chalcogen system or body is ≥102 KJ/mole.

4. The immobilized chalcogen system or body of claim 1 , wherein the activation energy for a chalcogen particle to escape the immobilized chalcogen system or body is ranges from 137.3 KJ/mole to 144.9 KJ/mole.

5. The immobilized chalcogen system or body of claim 1 , wherein 17 to 85 wt % of the chalcogen is sulfur and 15 to 83 wt % of the chalcogen is selenium.

6. The immobilized chalcogen system or body of claim 1 , wherein greater than 50 wt % of the chalcogen is sulfur.

7. The immobilized chalcogen system or body of claim 1 , wherein 100 wt % of the chalcogen is sulfur.

8. The immobilized chalcogen system or body of claim 1 , wherein the chalcogen comprises at least two of sulfur, oxygen, tellurium, and selenium.

9. The immobilized chalcogen system or body of claim 1 , wherein the aromatic conjugated π-bonding system comprises a carbo-cation center.

10. The immobilized chalcogen system or body of claim 1 , wherein the deactivation chemical functional group includes an oxygen-containing group, a nitrogen-containing group, a sulfur-containing group, phosphorus-containing group or a halogen-containing group.

11. A battery comprising:
an anode material; and
a cathode material containing an immobilized chalcogen system or body according to claim 1 .

12. The battery of claim 11 , further comprising a separator disposed between the anode material and the cathode material.

13. The battery of claim 11 , further comprising an electrolyte.

14. The battery of claim 13 , wherein the electrolyte is a carbonate electrolyte, an ether electrolyte, or an ionic liquid.

15. The battery of claim 11 , wherein the battery is rechargeable.

16. The battery of claim 11 , wherein the battery is a coin cell battery or a pouch cell battery.

17. The battery of claim 11 , wherein the battery exhibits a one-step electrochemical process during a discharge and charge cycle.

18. The battery of claim 11 , wherein the battery exhibits reduced polychalcogenide formation during a discharge and charge cycle.

19. The battery of claim 11 , wherein the anode material is made of a Group IA material, a Group IIA material, a Group IIIA material, a Group IVA, a Group V material, a semiconductor material, a transition metal, a rare earth metal, or graphite.

20. The battery of claim 11 , wherein the anode material is made of lithium.

Assignees

• Ii Vi Delaware Inc

Inventors

• Xu Wen-Qing
• Eissler Elgin E
• Li Xiaoming
• Xu Chengkun
• Moore Colin
• Patkar Shailesh
• Koeppen Christopher S

Classifications

• H01M2300/0025

  Organic electrolyte · CPC title

• H01M2004/028

  Positive electrodes · CPC title

• H01M2004/027

  Negative electrodes · CPC title

• H01M10/0566

  Liquid materials · CPC title

• H01M4/5815

  Sulfides · CPC title