Oxyfluoride compounds for lithium-cells and batteries

Patent metadata

Field	Value
Publication number	US-10199647-B2
Application number	US-201515125702-A
Country	US
Kind code	B2
Filing date	Mar 19, 2015
Priority date	Mar 20, 2014
Publication date	Feb 5, 2019
Grant date	Feb 5, 2019

Abstract

The present invention concerns specific new compounds of formula Li(2−x)Na(x)MO(2−y/2)F(1+y) (where 0≤x≤0.2 and −0.6≤y≤0,8 and M is a transition metal), cathode material comprising the new compounds, batteries and lithium-cells comprising said new compound or cathode material, a process for the production of the new compound and their use.

First claim

The invention claimed is:

1. A compound of formula Li (2−x) Na x MO (2−y/2) F (1+y) , wherein M represents one or more of V, Mo, Cr, and W and 0≤x≤0.2 and −0.6<y<0.8.

2. The compound of claim 1 , wherein x =0 and/or y =0.

3. The compound of claim 1 , wherein x =0.1 and/or y =0.

4. The compound of claim 1 , wherein M is in a trivalent oxidation state.

5. The compound of claim 1 , wherein M represents V.

6. The compound of claim 1 , wherein M represents Cr.

7. The compound of claim 2 , wherein M represents V in a trivalent oxidation state.

8. The compound of claim 2 , wherein M represents Cr in a trivalent oxidation state.

9. The compound of claim 3 , wherein M represents V in a trivalent oxidation state.

10. The compound of claim 3 , wherein M represents Cr in a trivalent oxidation state.

11. The compound of claim 2 , wherein M represents one or more of V, Mo, Cr, W in a trivalent oxidation state.

12. The compound of claim 3 , wherein M represents one or more of V, Mo, Cr, W in a trivalent oxidation state.

13. A cathode material, wherein the material comprises the compound of claim 1 .

14. The cathode material of claim 13 , wherein the material further comprises carbon black.

15. A battery and/or lithium cell which comprises the compound of claim 1 .

16. The battery or lithium cell of claim 15 , wherein the battery or lithium cell has a specific capacity of 150-500 mAh/g and/or an energy density of from 300 to 1,200 Wh/kg.

17. The battery or lithium cell of claim 15 , wherein the battery or lithium cell further comprises a counter electrode comprising or consisting of lithium.

18. A process for the production of the compound of claim 1 , wherein the process comprises milling inorganic precursors of the compound.

19. The process of claim 2 , wherein the inorganic precursors are milled mechanically.

20. The compound of claim 2 , wherein x =0 and y =0.

Assignees

• Karlsruher Inst Technologie

Inventors

• Chen Ruiyong
• Ren Shuhua
• Indris Sylvio
• Fichtner Maximillian
• Hahn Horst

Classifications

• C01P2004/64

  Nanometer sized, i.e. from 1-100 nanometer · CPC title

• H01M2004/028

  Positive electrodes · CPC title

• C01G39/006

  Compounds containing molybdenum, with or without oxygen or hydrogen, and containing two or more other elements · CPC title

• H01M10/0525

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

• C01G31/006

  Compounds containing vanadium, with or without oxygen or hydrogen, and containing two or more other elements · CPC title