Ion conductive layer and methods of forming

Patent metadata

Field	Value
Publication number	US-2022255079-A1
Application number	US-202217734605-A
Country	US
Kind code	A1
Filing date	May 2, 2022
Priority date	Apr 23, 2020
Publication date	Aug 11, 2022
Grant date	—

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 an electrolyte material including a halide-based material.

2 . The solid ion conductive layer of claim 1 , wherein the foamed matrix comprises an organic material, wherein the organic material is at a content of at least 0.5 vol % and at most 50 vol % for a total volume of the solid ion conductive layer.

3 . The solid ion conductive layer of claim 1 , wherein the foamed matrix comprises a polymer including 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 , comprises 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 an inert metal embedded in the foamed matrix.

8 . The solid ion conductive layer of claim 1 , wherein the foamed matrix comprises an organic material including a polymer, 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 foamed matrix comprises an organic material including a polymer including 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 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.

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

14 . A solid ion conductive layer, comprising a foamed matrix and an electrolyte material embedded in the foamed matrix, wherein the foamed matrix comprises a polymer including siloxane and the electrolyte material comprises a halide-based material.

15 . The solid ion conductive layer of claim 14 , wherein the polymer comprises polydimethylsiloxane.

16 . The solid ion conductive layer of claim 14 , 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 14 , comprising Pt embedded in the foamed matrix.

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

19 . The solid ion conductive layer of claim 14 , wherein the foamed matrix comprises a porosity including pores having an average pore size of at least 0.5 microns and at most 10 microns.

20 . The solid ion conductive layer of claim 14 , 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

• H01M2300/0088

  Composites · CPC title

• H01M2300/008

  Halides · CPC title

• H01M10/0562 Primary

  Solid materials · CPC title

• H01M10/052

  Li-accumulators · CPC title

• Y02E60/50

  Fuel cells · CPC title