Active material and fluoride ion battery

Patent metadata

Field	Value
Publication number	US-12027701-B2
Application number	US-202318378200-A
Country	US
Kind code	B2
Filing date	Oct 10, 2023
Priority date	May 28, 2019
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

A main object of the present disclosure is to provide an active material of which capacity properties are excellent. The present disclosure achieves the object by providing an active material to be used for a fluoride ion battery, the active material comprising: a composition represented by M 1 N x in which M 1 is at least one kind of Cu, Ti, V, Cr, Fe, Mn, Co, Ni, Zn, Nb, In, Sn, Ta, W, and Bi, and x satisfies 0.05≤x≤3; or a composition represented by M 2 Ln y N z in which M 2 is at least one kind of Cu, Ti, V, Cr, Fe, Mn, Co, Ni, Zn, Nb, In, Sn, Ta, W, and Bi, Ln is at least one kind of Sc, Y, and lanthanoid, y satisfies 0.1≤y≤3, and z satisfies 0.15≤z≤6.

First claim

What is claimed is:

1. A cathode active material layer to be used for a fluoride ion battery, the cathode active material layer contains an active material comprising:
a composition represented by M 1 N x in which M 1 is at least one element selected from the group consisting of Cu, Ti, V, Cr, Fe, Mn, Co, Ni, Zn, Nb, In, Sn, Ta, W, and Bi, and x satisfies 0.05≤x≤3; or
a composition represented by M 2 Ln y N z in which M 2 is at least one element selected from the group consisting of Cu, Ti, V, Cr, Fe, Mn, Co, Ni, Zn, Nb, In, Sn, Ta, W, and Bi, Ln is at least one element selected from the group consisting of Sc, Y, and lanthanoid, y satisfies 0.1≤y≤3, and z satisfies 0.15≤z≤6, wherein
a content of the active material therein is 30 weight % or more, and
the cathode active material layer contains an inorganic solid electrolyte having fluoride ion conductivity.

2. The cathode active material layer according to claim 1 , wherein the active material comprises the composition represented by the M 1 N x .

3. The cathode active material layer according to claim 2 , wherein the M 1 includes at least one of Cu, Ti, Fe, and V.

4. The cathode active material layer according to claim 1 , wherein the active material comprises the composition represented by the M 2 Ln y N z .

5. The cathode active material layer according to claim 4 , wherein the M 2 includes Mn.

6. The cathode active material layer according to claim 4 , wherein the Ln includes Ce.

7. The cathode active material layer according to claim 1 , wherein the content of the active material is 50 weight % or more.

8. The cathode active material layer according to claim 1 , wherein the content of the active material is 70 weight % or more.

9. The cathode active material layer according to claim 1 , wherein the active material is Cu 3 N or TiN.

10. A cathode active material layer to be used for a fluoride ion battery, the cathode active material layer contains an active material comprising:
a composition represented by M 1 N x in which M 1 is at least one element selected from the group consisting of Cu, V, Cr, Fe, Mn, Co, Ni, Zn, Nb, In, Sn, Ta, W, and Bi, and x satisfies 0.05≤x≤3; or
a composition represented by M 2 Ln y N z in which M 2 is at least one element selected from the group consisting of Cu, Ti, V, Cr, Fe, Mn, Co, Ni, Zn, Nb, In, Sn, Ta, W, and Bi, Ln is at least one element selected from the group consisting of Sc, Y, and lanthanoid, y satisfies 0.1≤y≤3, and z satisfies 0.15≤z≤6, and
the cathode active material layer contains an inorganic solid electrolyte having fluoride ion conductivity.

11. The cathode active material layer according to claim 10 , wherein the active material comprises the composition represented by the M 2 Ln y N z .

12. The cathode active material layer according to claim 10 , wherein the M 2 includes Mn.

13. The cathode active material layer according to claim 10 , wherein the Ln includes Ce.

Assignees

• Toyota Motor Co Ltd

Inventors

• Tojigamori Takeshi

Classifications

• C01B21/076 Primary

  with titanium or zirconium {or hafnium} · CPC title

• C01P2002/72

  by d-values or two theta-values, e.g. as X-ray diagram · CPC title

• C01B21/0617

  with vanadium, niobium or tantalum · CPC title

• C01B21/0622

  with iron, cobalt or nickel · CPC title

• C01B21/0627

  with one or more rare earth metals · CPC title