Anti-perovskite solid electrolyte compositions

Patent metadata

Field	Value
Publication number	US-9246188-B2
Application number	US-201313833124-A
Country	US
Kind code	B2
Filing date	Mar 15, 2013
Priority date	Feb 14, 2011
Publication date	Jan 26, 2016
Grant date	Jan 26, 2016

Abstract

Solid electrolyte antiperovskite compositions for batteries, capacitors, and other electrochemical devices have chemical formula Li 3 OA, Li (3-x) M x/2 OA, Li (3-x) N x/3 OA, or LiCOX z Y (1-z) , wherein M and N are divalent and trivalent metals respectively and wherein A is a halide or mixture of halides, and X and Y are halides.

First claim

What is claimed:

1. A solid electrolyte composition, comprising:
(a) the formula Li 3 OCl,
(b) the formula Li (3-x) M x/2 OA,
wherein 0<x≦3,
wherein M comprises magnesium, calcium, barium, strontium, and mixtures thereof, and
wherein A comprises fluoride, chloride, bromide, iodide, or a mixture thereof,
(c) the formula Li (3-x) N (x/3) OA,
wherein N is a trivalent metal,
wherein 0≦x≦3, and
wherein A comprises fluoride, chloride, bromide, iodide, or a mixture thereof, or
(d) the formula Li 3 OX z Y (1-z) ,
wherein X and Y are different halides, and
wherein 0≦z≦1.

2. The solid electrolyte composition of claim 1 , wherein M is magnesium and A is chloride.

3. The solid electrolyte composition of claim 1 , wherein M is magnesium and A is bromide.

4. The solid electrolyte composition of claim 1 , wherein A is a mixture of bromide and chloride.

5. The solid electrolyte composition of claim 1 , wherein x is 0.10 and A is chloride, bromide, or a mixture of chloride and bromide.

6. The solid electrolyte composition of claim 1 , wherein M is magnesium, A is chloride, and x is 0.10.

7. An electrochemical device comprising a solid electrolyte composition of
(a) the formula Li 3 OCl,
(b) the formula Li (3-x) M x/2 OA,
wherein 0≦x≦2,
wherein M comprises magnesium, calcium, barium, strontium, or a mixture thereof, and
wherein A comprises fluoride, chloride, bromide, iodide, or a mixture thereof, or
(c) the formula Li (3-x) N (x/3) OA,
wherein N is a trivalent metal, and
wherein A comprises fluoride, chloride, bromide, iodide, or a mixtures thereof, and
wherein 0≦x≦3, or
(d) the formula Li 3 OX z Y (1-z) ,
wherein X and Y are different halides, and
wherein 0≦z≦1.

8. The electrochemical device of claim 7 , wherein M is magnesium and A is chloride.

9. The electrochemical device of claim 7 , wherein M is magnesium and A is bromide.

10. The electrochemical device of claim 7 , wherein A is a mixture of bromide and chloride.

11. The electrochemical device of claim 7 , wherein x is zero and A is chloride, bromide, or a mixture of chloride and bromide.

12. The electrochemical device of claim 7 , wherein A is chloride, M is magnesium, and x is 0.15.

13. The electrochemical device of claim 7 , wherein the electrochemical device includes a battery.

14. The electrochemical device of claim 7 , wherein the electrochemical device includes a capacitor.

15. A method for producing the solid electrolyte composition of claim 1 , the method comprising:
heating in a vessel, under essentially water-free conditions, an admixture of a powder comprising lithium hydroxide and a powder comprising a lithium halide, the heating being performed so as to covert at least a portion of the admixture to a melt composition; and
cooling the melt composition so as to give rise to a product composition.

16. The method of claim 15 , wherein the heating is performed under a vacuum.

17. The method of claim 15 , wherein the admixture is heated to a temperature of at least about 270 degrees C.

18. The method of claim 15 , wherein the heating is performed under an inert atmosphere.

19. The method of claim 18 , wherein the inert atmosphere comprises argon, nitrogen, helium, or any combination thereof.

20. The method of claim 15 , wherein the cooling comprises cooling the vessel using liquid nitrogen.

21. The method of claim 15 , wherein the cooling comprises contacting the melt composition with a substrate having a temperature lower than the temperature of the melt composition.

22. The method of claim 15 , wherein the product composition is an antiperovskite composition.

23. The method of claim 15 , further comprising annealing the product composition.

24. The method of claim 15 , wherein the product composition comprises: the formula Li 3 OA, the formula Li (3-x) M (x/2) OA, wherein A is a halide and M is a divalent metal, the formula Li 3 OX z Y (1-z) , wherein which X and Y are halogens, the formula Li (3-x) N x/3 OA, wherein A is a halide and N is a trivalent metal, or any combination thereof.

Assignees

• Los Alamos Nat Security Llc
• Los Alamos Nat Security Llc

Inventors

• Zhao Yusheng
• Daemen Luc Louis

Classifications

• H01G11/56

  Solid electrolytes, e.g. gels; Additives therein · CPC title

• H01M2300/0071

  Oxides · CPC title

• Y02E60/13

  Energy storage using capacitors · CPC title

• H01M6/186

  Only oxysalts-containing solid electrolytes · CPC title

• H01G9/025

  Solid electrolytes (H01G11/54 takes precedence) · CPC title