Particulate material, method for its manufacture and use

Patent metadata

Field	Value
Publication number	US-12155071-B2
Application number	US-202017635347-A
Country	US
Kind code	B2
Filing date	Aug 20, 2020
Priority date	Aug 28, 2019
Publication date	Nov 26, 2024
Grant date	Nov 26, 2024

Abstract

Particulate material of the composition Li1+xTM1−xO2 wherein x is in the range of from 0.1 to 0.25 and TM is a combination of elements according to general formula (I) (Ni a Co b Mn c ) 1−d M 1 d (I) wherein a is in the range of from 0.30 to 0.38, b being in the range of from zero to 0.05, c being in the range of from 0.60 to 0.70, and d being in the range of from zero to 0.05, M 1 is selected from Al, Ti, Zr, Mo, Mg, B, and combinations of at least two of the foregoing, a+b+c=1, wherein said particulate material has an average particle diameter D50 in the range of from 2 to 20 μm and wherein said particulate material has a pressed density in the range of from 2.75 to 3.1 g/cm 3 .

First claim

The invention claimed is:

1. A particulate material with a composition Li 1+x TM 1−x O 2 ,
wherein x ranges from 0.1 to 0.2 and TM is a combination of elements according to general formula (I)
(Ni a Co b Mn c ) 1−d M 1 d   (I)

wherein
a ranges from 0.30 to 0.38,
b ranges from zero to 0.05,
c ranges from 0.60 to 0.70, and
0≤d0.05,
M 1 is chosen from Al, Ti, Zr, Mo, Mg, B, and combinations of at least two of the foregoing,
a+b+c= 1,

wherein the particulate material has an average particle diameter D50 ranging from about 2 μm to about 20 μm, and
wherein the particulate material has a pressed density ranging from about 2.75 g/cm 3 to 3.2 g/cm 3 , as determined at a pressure of 250 MPa.

2. The particulate material according to claim 1 , wherein b is zero and wherein M 1 is enriched in an outer part of the particles of the particulate material.

3. The particulate material according to claim 1 , wherein M 1 is Al.

4. The particulate material according to claim 1 , wherein a volumetric energy density ranges from about 2,750 W·h/l about 3,100 W·h/l, and wherein a volumetric energy density is determined as 1 st cycle discharge capacity×average voltage×pressed density.

5. The particulate material according to claim 1 , wherein the pressed density ranges from about 2.85 g/cm 3 to about 3.10 g/cm 3 , as determined at a pressure of about 250 MPa.

6. A process for manufacturing a particulate material according to claim 1 , wherein the process comprises:
(a) providing a particulate hydroxide, oxide or oxyhydroxide of manganese, nickel, and, optionally, at least one of Co and M 1 , and made by coprecipitation with sodium hydroxide or potassium hydroxide as a base,
(b) adding a source of lithium,
(c) treating a mixture obtained from step (b) thermally generating a resultant lithiated oxide,
(d) contacting the resultant lithiated oxide with a mineral acid or an aqueous solution of a compound of M 1 or a combination thereof,
(e) removing water generating a resultant solid residue, and
(f) treating the resultant solid residue thermally.

7. The process according to claim 6 , wherein step (c) is performed at a maximum temperature ranging from about 650° C. to about 1000° C.

8. The process according to claim 6 , wherein step (e) is performed by a solid-liquid separation step.

9. The process according to claim 6 , wherein step (f) is performed at a temperature ranging from about 300 ° C. to about 500° C.

10. The process according to claim 6 , wherein steps (d) and (e) are performed simultaneously.

11. An electrode comprising:
(A) at least one particulate material according to claim 1 ,
(B) carbon in electrically conductive form, and
(C) a binder.

12. A secondary battery comprising:
(1) at least one electrode according to claim 11 ,
(2) at least one anode, and
(3) an electrolyte.

Assignees

• Basf Se

Inventors

• Kim Young Jin
• Sioss James A
• Teufl Tobias Maximilian
• Lampert Jordan K

Classifications

• H01M2004/028

  Positive electrodes · CPC title

• H01M10/0525

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

• H01M4/625

  Carbon or graphite · CPC title

• H01M4/623

  fluorinated polymers · CPC title

• H01M4/505

  of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title