Solid-state lithium-ion conductor and methods of manufacture thereof

Patent metadata

Field	Value
Publication number	US-12062790-B2
Application number	US-202117321714-A
Country	US
Kind code	B2
Filing date	May 17, 2021
Priority date	Sep 30, 2020
Publication date	Aug 13, 2024
Grant date	Aug 13, 2024

Abstract

A solid-state ion conductor including a compound of Formula 1:

Li (3+2y1) B(P 1-y1 A1 y1 O 4 ) 2   Formula 1

wherein, in Formula 1, A1 is an element of Groups 4, 14, or a combination thereof, and has an oxidation state of +4, and 0<y1<1.

First claim

What is claimed is:

1. A solid-state ion conductor comprising a compound of Formula 2:
Li 5+4(6-a2)y2 B(S 1-y2 A2 y2 a2 O 4 ) 4   Formula 2

wherein, in Formula 2,
A2 is an element of Groups 4, 5, 14, 15, 17, or a combination thereof, wherein an oxidation state of A2 is 4≤a2≤5, and 0<y2<1.

2. The solid-state ion conductor of claim 1 , wherein A2 is Ti, Zr, Hf, V, Nb, Ta, Si, Ge, Sn, P, As, Sb, Bi, Cl, Br, I, or a combination thereof.

3. The solid-state ion conductor of claim 2 , wherein A2 is P, a2 is 5, and 0.03<y2<0.1.

4. The solid-state ion conductor of claim 3 , wherein a structure of the solid-state ion conductor comprises corner-sharing BO 4 tetrahedra and SO 4 tetrahedra.

5. The solid-state ion conductor of claim 4 , wherein in the structure of the solid-state ion conductor A2 resides on a S site and a lithium coordination environment is non-symmetric.

6. A solid-state ion conductor comprising a compound of Formula 3:
Li (2+m3+3y3(6-b)) M3 m3 A3 (2-m3) (S (1-y3) X b y3 O 4 ) 3   Formula 3

wherein, in Formula 3,
M3 is an element of Groups 1, 11, or a combination thereof,
A3 is an element of Groups 2, 12, or a combination thereof,
X is an element of Groups 4, 5, 14, 15, 17, or a combination thereof, wherein an oxidation state of X is b, and
0≤m3<1, 0≤y3<1, and 4≤b≤5,
wherein at least one of m3 and y3 is not 0.

7. The solid-state ion conductor of claim 6 , wherein M3 is Li, Na, K, Cs, Cu, Ag, or a combination thereof.

8. The solid-state ion conductor of claim 6 , wherein A3 is Mg, Ca, Sr, Zn, or a combination thereof.

9. The solid-state ion conductor of claim 6 , wherein X is Ti, Zr, Hf, V, Nb, Ta, Si, Ge, Sn, P, As, Sb, Bi, Cl, Br, I, or a combination thereof.

10. The solid-state ion conductor of claim 9 , wherein A3 is Mg and X is P.

11. The solid state ion conductor of claim 10 , wherein m3 is 0, 0.03≤y3≤0.1, and b is 5.

12. The solid-state ion conductor of claim 11 , wherein a structure of the solid-state ion conductor comprises corner-sharing MgO 6 octahedra and SO 4 tetrahedra.

13. A positive electrode comprising:
a positive active material layer comprising a lithium transition metal oxide, a lithium transition metal phosphate, or a combination thereof; and
the solid-state ion conductor of claim 1 on the positive active material layer.

14. A positive electrode comprising:
a positive active material layer comprising a lithium transition metal oxide, a lithium transition metal phosphate, or a combination thereof; and
the solid-state ion conductor of claim 6 on the positive active material layer.

15. An electrochemical cell comprising:
a positive electrode;
a negative electrode; and
an electrolyte layer between the positive electrode and the negative electrode,
wherein at least one of the positive electrode, the negative electrode, or the electrolyte layer comprises the solid-state ion conductor of claim 1 .

16. An electrochemical cell comprising:
a positive electrode;
a negative electrode; and
an electrolyte layer between the positive electrode and the negative electrode,
wherein at least one of the positive electrode, the negative electrode, or the electrolyte layer comprises the solid-state ion conductor of claim 6 .

Assignees

• Samsung Electronics Co Ltd
• Univ California
• Lawrence Berkeley Nat Laboratory

Inventors

• Jun Kyujung
• Ceder Gerbrand
• Sun Yingzhi
• Wang Yan
• Miara Lincoln
• Zeng Yan
• Xiao Yihan

Classifications

• H01M10/0525

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

• H01M2004/028

  Positive electrodes · CPC title

• H01M2300/0068

  inorganic · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01B1/06

  mainly consisting of other non-metallic substances · CPC title