Solid state electrolyte materials

Patent metadata

Field	Value
Publication number	US-11735769-B2
Application number	US-202117175971-A
Country	US
Kind code	B2
Filing date	Feb 15, 2021
Priority date	Dec 31, 2018
Publication date	Aug 22, 2023
Grant date	Aug 22, 2023

Abstract

A solid state electrolyte material including a decontaminated lithium conducting ceramic oxide material including a decontaminated surface thickness. The decontaminated surface thickness is less than or equal to 5 nm. The decontaminated surface thickness may be greater than or equal to 1 nm. The decontaminated lithium conducting ceramic oxide material may be selected from the group consisting of Li 7 La 3 Zr 2 O 12 (LLZO), Li 5 La 3 Ta 2 O 12 (LLTO), Li 6 La 2 CaTa 2 O 12 (LLCTO), Li 6 La 2 ANb 2 O 12 (A is Ca or Sr), Li 1+x Al x Ge 2-x (PO 4 ) 3 (LAGP), Li 14 Al 0.4 (Ge 2-x Ti x ) 1.6 (PO 4 ) 3 (LAGTP), perovskite Li 3x La 2/3-x TiO 3 (LLTO), Li 0.8 La 0.6 Zr 2 (PO 4 ) 3 (LLZP), Li 1+x Ti 2-x Al x (PO 4 ) 3 (LTAP), Li 1+x+y Ti 2-x Al x Si y (PO 4 ) 3-y (LTASP), LiTi x Zr 2-x (PO 4 ) 3 (LTZP), Li 2 Nd 3 TeSbO 12 and mixtures thereof.

First claim

What is claimed is:

1. A solid state electrolyte material comprising:
a decontaminated lithium conducting ceramic oxide material including a decontaminated surface thickness formed from a contaminated lithium conducting ceramic oxide material, the decontaminated surface thickness is greater than or equal to 1 nm and less than or equal to 5 nm, the decontaminated lithium conducting ceramic oxide material is selected from the group consisting of Li 5 La 3 Ta 2 O 12 (LLTO), Li 1+x Ti 2-x Al x (PO 4 ) 3 (LTAP), Li 1+x+y Ti 2-x Al x Si y (PO 4 ) 3-y (LTASP), LiTi x Zr 2-x (PO 4 ) 3 (LTZP), Li 2 Nd 3 TeSbO 12 and a mixture thereof.

2. The solid state electrolyte material of claim 1 , wherein the decontaminated surface thickness includes one or more contaminants, the one or more contaminants includes one or more carbonates, one or more hydroxides and combinations thereof.

3. The solid state electrolyte material of claim 2 , wherein the one or more carbonates includes one or more bicarbonates.

4. The solid state electrolyte material of claim 1 , wherein the decontaminated lithium conducting ceramic oxide material has a wettability in a range of contact angles of 40° to 100°.

5. The solid state electrolyte material of claim 1 , wherein the decontaminated lithium conducting ceramic oxide material has an interfacial resistance of 0 to 20 Ohm cm 2 .

6. The solid state electrolyte material of claim 1 , wherein the decontaminated lithium conducting ceramic oxide material formed from the contaminated lithium conducting ceramic oxide material having a contaminated surface thickness of the one or more contaminants.

7. The solid state electrolyte material of claim 6 , wherein the contaminated surface thickness is greater than the decontaminated surface thickness.

8. The solid state electrolyte material of claim 6 , wherein the contaminated surface thickness is in a range of 50 to 70 nm.

9. The solid state electrolyte material of claim 6 , wherein the contaminated lithium conducting ceramic oxide material has a contaminated impedance and the decontaminated lithium conducting ceramic oxide material has a decontaminated impedance, the decontaminated impedance at room temperature is less than the contaminated impedance at room temperature.

10. A solid state electrolyte material comprising:
a decontaminated lithium conducting ceramic oxide material including a decontaminated surface thickness formed from a contaminated lithium conducting ceramic oxide material, the decontaminated surface thickness is greater than or equal to 1 nm and less than or equal to 5 nm, the decontaminated lithium conducting ceramic oxide material formed from the contaminated lithium conducting ceramic oxide material having a contaminated surface thickness of one or more contaminants, the contaminated lithium conducting ceramic oxide material has a contaminated impedance and the decontaminated lithium conducting ceramic oxide material has a decontaminated impedance, the decontaminated impedance is less than the contaminated impedance at room temperature by a factor in a range of 6 to 22 times.

11. The solid state electrolyte material of claim 10 , wherein the solid state electrolyte material is a planar solid state electrolyte material.

12. The solid state electrolyte material of claim 10 , wherein the thickness of the solid state electrolyte material is 10 to 40 μm.

13. A solid state electrolyte material comprising:
a decontaminated lithium conducting ceramic oxide material including a decontaminated surface thickness, the decontaminated surface thickness is less than or equal to 5 nm, the solid state electrolyte material formed in a spherical shape having a diameter, the decontaminated lithium conducting ceramic oxide material is selected from the group consisting of Li 1+x+y Ti 2-x Al x Si y (PO 4 ) 3-y (LTASP), LiTi x Zr 2-x (PO 4 ) 3 (LTZP), and a mixture thereof.

14. The solid state electrolyte material of claim 13 , wherein the diameter of the spherical shape is in a range of 400 to 600 nm.

15. The solid state electrolyte material of claim 13 , wherein the decontaminated surface thickness is greater than or equal to 1 nm.

16. The solid state electrolyte material of claim 13 , wherein the decontaminated surface thickness includes one or more contaminants, the one or more contaminants includes one or more carbonates, one or more hydroxides and combinations thereof.

17. The solid state electrolyte material of claim 13 , wherein the decontaminated lithium conducting ceramic oxide material has a wettability in a range of contact angles of 40° to 100°.

18. The solid state electrolyte material of claim 13 , wherein the decontaminated lithium conducting ceramic oxide material has an interfacial resistance of 0 to 20 Ohm cm 2 .

19. The solid state electrolyte material of claim 13 , wherein the decontaminated lithium conducting ceramic oxide material formed from a contaminated lithium conducting ceramic oxide material having a contaminated surface thickness of the one or more contaminants.

20. The solid state electrolyte material of claim 1 , wherein the decontaminated lithium conducting ceramic oxide material is selected from the group consisting of Li 1+x Ti 2-x Al x (PO 4 ) 3 (LTAP), Li 1+x+y Ti 2-x Al x Si y (PO 4 ) 3-y (LTASP), LiTi x Zr 2-x (PO 4 ) 3 (LTZP), and a mixture thereof.

Assignees

• Bosch Gmbh Robert

Inventors

• Kuppan Saravanan
• Harry Katherine
• Metzger Michael
• Craig Nathan
• Christensen Jake

Classifications

• H01M10/0565 Primary

  Polymeric materials, e.g. gel-type or solid-type · CPC title

• C04B35/48

  based on zirconium or hafnium oxides, zirconates, {zircon} or hafnates · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01M50/403

  Manufacturing processes of separators, membranes or diaphragms · CPC title

• H01M50/434

  Ceramics · CPC title