Ion conductive layer and methods of forming

Patent metadata

Field	Value
Publication number	US-12095089-B2
Application number	US-202117239307-A
Country	US
Kind code	B2
Filing date	Apr 23, 2021
Priority date	Apr 23, 2020
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A solid ion conductive layer can include a foamed matrix and an electrolyte material including a hygroscopic material. In an embodiment, the electrolyte material can include a halide-based material, a sulfide-based material, or any combination thereof. In another embodiment, the solid ion conductive layer can include total porosity of at least 30 vol % for a total volume of the solid ion conductive layer.

First claim

What is claimed is:

1. A solid ion conductive layer, comprising a foamed matrix including a solid electrolyte material including a halide-based material mixed with a polymer material, wherein the halide-based material is represented by formula M 3−δ (Me k+ ) f X 3−δ+k * f , wherein −3≤δ<3, 0≤f<1, k is a valence of Me, 2≤k<6, M includes an alkali metal element including Li, Me includes a metal element that is different from M, and X includes a halogen.

2. The solid ion conductive layer of claim 1 , wherein the polymer material is at a content of at least 5 wt % and at most 70 wt % for a total weight of the solid ion conductive layer.

3. The solid ion conductive layer of claim 1 , wherein the polymer material comprises siloxane.

4. The solid ion conductive layer of claim 1 , wherein the foamed matrix comprises polydimethylsiloxane or polyvinyl chloride.

5. The solid ion conductive layer of claim 3 , comprising platinum embedded within the foamed matrix.

6. The solid ion conductive layer of claim 1 , comprising at least 10 ppm to at most 1 wt. % of Pt for the total weight of the foamed matrix.

7. The solid ion conductive layer of claim 1 , comprising the polymer at a content of at most 50 vol % and at least 7 vol % for the total volume of the solid ion conductive material.

8. The solid ion conductive layer of claim 1 , wherein the polymer has an HLB number of at most 10, Reactivity Value of at most 20%, or a combination thereof.

9. The solid ion conductive layer of claim 1 , wherein the polymer material comprises epoxy, polyurethane, poly(ethylene), poly(ethylene oxide), or a combination thereof.

10. The solid ion conductive layer of claim 1 , comprising a total porosity of at least 30 vol % and at most 95 vol % for a total volume of the solid ion conductive layer.

11. The solid ion conductive layer of claim 1 , wherein the foamed matrix comprises a porosity including pores having an average pore size of at least 0.1 microns and at most 50 microns.

12. The solid ion conductive layer of claim 1 , wherein Me includes an alkaline earth element, a Group 13 element, a Group 3 element, a rare earth element, or any combination thereof, and X includes at least one of Cl and Br.

13. The solid ion conductive layer of claim 1 , wherein the electrolyte material comprises ammonium halide complexed with the halide-based material.

14. A composite layer, comprising the solid ion conductive layer of claim 1 and an electron conductive material.

15. The solid ion conductive layer of claim 1 , wherein the polymer comprises polydimethylsiloxane.

16. The solid ion conductive layer of claim 1 , wherein the polymer comprises vinyl-terminated polydimethylsiloxane, hydride functional siloxanes, methylhydrosiloxane-dimethylsiloxane copolymer, or a combination thereof.

17. The solid ion conductive layer of claim 15 , comprising Pt embedded in the foamed matrix.

18. The solid ion conductive layer of claim 17 , comprising at least 10 ppm to at most 1 wt. % of Pt for the total weight of the foamed matrix.

19. An electrochemical device, comprising the solid ion conductive layer of claim 1 .

20. The solid ion conductive layer of claim 1 , further comprising lithium metal dispersed in the foamed matrix.

Assignees

• Saint Gobain Ceramics

Inventors

• Takagi Yuto
• Li Chuanping
• Wang Ruofan
• Mcgahan Michael
• Ouspenski Vladimir
• Flamanc Jeremy

Classifications

• H01M10/052

  Li-accumulators · CPC title

• H01M2300/0088

  Composites · CPC title

• H01M10/0525 Primary

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M2004/021

  Physical characteristics, e.g. porosity, surface area · CPC title

• H01M10/0562 Primary

  Solid materials · CPC title