Ion conductive layer including binder material

Patent metadata

Field	Value
Publication number	US-11532816-B2
Application number	US-202217734599-A
Country	US
Kind code	B2
Filing date	May 2, 2022
Priority date	Apr 23, 2020
Publication date	Dec 20, 2022
Grant date	Dec 20, 2022

Abstract

An ion conductive layer can include a hygroscopic ion conductive material, such as a halide-based material. In an embodiment, the ion conductive layer can include an organic material, ammonium halide, or a combination thereof.

First claim

What is claimed is:

1. A solid ion conductive layer, comprising:
a first phase extending continuously for at least a portion of the solid ion conductive layer, wherein the first phase comprises an ion conductive material comprising a halide-based 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, 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; and
a second phase comprising an organic material comprising a binder material, wherein the binder material comprises:
an HLB value of at most 10,
a Reactivity Value of at most 20%; or
a combination thereof.

2. The solid ion conductive layer of claim 1 , wherein the binder material comprises polyvinyl chloride, poly(acrylonitrile), hydrogenated nitrile butadiene rubber, styrene-butadiene rubber, poly(methyl methacrylate), polyvinyl pyrrolidone, polyisobutylene, poly(vinylidene fluoride), paraffin wax, polyethylene, poly(ethylene oxide), polydimethylsiloxane or any combination thereof.

3. The solid ion conductive layer of claim 1 , wherein the binder material comprises hydrogenated nitrile butadiene rubber, styrene-butadiene rubber, polyisobutylene, polydimethylsiloxane, or any combination thereof.

4. The solid ion conductive layer of claim 1 , wherein the binder material comprises an HLB value of 0, a Reactivity Value of 0, or both.

5. The solid ion conductive layer of claim 1 , wherein the solid ion conductive layer comprises an active cathode material.

6. The solid ion conductive layer of claim 1 , wherein the binder material comprises polyisobutylene.

7. A solid ion conductive layer, comprising:
a first phase extending continuously for at least a portion of the solid ion conductive layer, wherein the first phase comprises an ion conductive material comprising a halide-based 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, k is the 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, and wherein the ion conductive material comprises ammonium halide complexed with the halide-based material; and
a second phase comprising an organic material comprising a binder material, wherein the binder comprises:
an HLB value of at most 10,
a Reactivity Value of at most 20%; or
a combination thereof.

8. The solid ion conductive layer of claim 7 , wherein the binder material comprises polyvinyl chloride, poly(acrylonitrile), hydrogenated nitrile butadiene rubber, styrene-butadiene rubber, poly(methyl methacrylate), polyvinyl pyrrolidone, polyisobutylene, poly(vinylidene fluoride), paraffin wax, polyethylene, poly(ethylene oxide), polydimethylsiloxane or any combination thereof.

9. The solid ion conductive layer of claim 1 , wherein the solid ion conductive layer is in a form of a tape.

10. The solid ion conductive layer of claim 1 , comprising an ionic conductivity of at least 0.15 mS/cm.

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

12. The solid ion conductive layer of claim 1 , comprising at least 50 vol % and at most 90 vol % of the ion conductive material for a total volume of the solid ion conductive layer.

13. The solid ion conductive layer of claim 1 , comprising at least 0.1 wt % and at most 10 wt % of the binder material for a total weight of the solid ion conductive layer.

14. The solid ion conductive layer of claim 1 , comprising a network of interconnecting flakes within a bulk of the solid ion conductive layer, wherein the flakes comprise the halide-based material and comprising pores extending through at least a portion of the network.

15. The solid ion conductive layer of claim 1 , further comprising an active electrode material.

16. The solid ion conductive layer of claim 8 , further comprising an active electrode material.

17. The solid ion conductive layer of claim 8 , comprising at least 0.1 wt % and at most 10 wt % of the binder material for a total weight of the solid ion conductive layer.

18. The solid ion conductive layer of claim 8 , wherein the binder material comprises an HLB value of 0, a Reactivity Value of 0, or both.

19. The solid ion conductive layer of claim 8 , comprising at least 50 vol % and at most 90 vol % of the ion conductive material for a total volume of the solid ion conductive layer.

20. The solid ion conductive layer of claim 8 , comprising a porosity of at most 10 vol % for a total volume of the solid ion conductive layer.

Assignees

• Saint Gobain Ceramics

Inventors

• Wang Ruofan
• Takagi Yuto
• Mcgahan Michael
• Ouspenski Vladimir
• Assat Gaurav
• Li Chuanping

Classifications

• H01M2300/008

  Halides · CPC title

• H01M10/052 Primary

  Li-accumulators · CPC title

• H01M4/13

  Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof · CPC title

• H01M10/0562 Primary

  Solid materials · CPC title

• H01M4/366

  as layered products · CPC title