Lithium and manganese rich positive active material compositions

Patent metadata

Field	Value
Publication number	US-2025054961-A1
Application number	US-202318448491-A
Country	US
Kind code	A1
Filing date	Aug 11, 2023
Priority date	Aug 11, 2023
Publication date	Feb 13, 2025
Grant date	—

Abstract

A positive electrode active material may include a compound represented by formula 1 or formula 2: Li 1.10 Mn 0.52 Ni (0.38-x) A (x-a) MaO 2 ( 1 ), Li 1.12 Mn 0.51 Ni (0.37-x) A (x-a) M a O 2 ( 2 ). A is Co, Cr, or a combination thereof, M is W +6 , Ta +5 , V +5 , or a combination thereof, 0<x<0.1, 0<a<0.04, and 3.8<average oxidation state of Mn ion<4.0.

First claim

What is claimed is:

1 . A positive electrode active material comprising a compound represented by formula 1:
Li 1.10 Mn 0.52 Ni (0.38-x) A (x-a) M a O 2   (1)
wherein:
A is Co, Cr, or a combination thereof;
M is W +6 , Ta +5 , V +5 , or a combination thereof;
0<x<0.06;
0<a<0.02; and
3.9≤average oxidation state of Mn ion<4.0.

2 . The positive electrode active material of claim 1 , wherein 0.01<x<0.04.

3 . The positive electrode active material of claim 1 , wherein 0<a≤0.01.

4 . The positive electrode active material of claim 1 , wherein 3.94≤average oxidation state of Mn ion≤3.98.

5 . The positive electrode active material of claim 1 includes a material selected from the group consisting of Li 1.10 Mn 0.52 Ni 0.33 Co 0.04 W 0.01 O 2 , Li 1.10 Mn 0.52 Ni 0.33 Co 0.04 Ta 0.01 O 2 , Li 1.10 Mn 0.52 Ni 0.33 Co 0.04 V 0.01 O 2 , Li 1.10 Mn 0.52 Ni 0.33 Co 0.03 W 0.02 O 2 , Li 1.10 Mn 0.52 Ni 0.33 Co 0.03 Ta 0.02 O 2 , and Li 1.10 Mn 0.52 Ni 0.33 Co 0.33 V 0.02 O 2 .

6 . The positive electrode active material of claim 1 , wherein the Ni has an average oxidation state of about 2.

7 . A positive electrode active material comprising a compound represented by formula 2:
Li 1.12 Mn 0.51 Ni (0.37-x) A (x-a) M a O 2   (2)
wherein:
A is Co, Cr, or a combination thereof;
M is W +6 , Ta +5 , V +5 , or a combination thereof;
0<x<0.1;
0<a<0.04; and
3.8<average oxidation state of Mn ion<4.0.

8 . The positive electrode active material of claim 7 , wherein 0.02<x<0.09.

9 . The positive electrode active material of claim 7 , wherein 0<a≤0.03.

10 . The positive electrode active material of claim 7 , wherein 3.86≤average oxidation state of Mn ion≤3.98.

11 . The positive electrode active material of claim 7 includes a material selected from the group consisting of Li 1.12 Mn 0.51 Ni 0.29 Co 0.065 W 0.015 O 2 , Li 1.12 Mn 0.51 Ni 0.29 Co 0.065 Ta 0.015 O 2 , Li 1.12 Mn 0.51 Ni 0.29 Co 0.065 V 0.015 O 2 , Li 1.12 Mn 0.51 Ni 0.29 Co 0.05 W 0.03 O 2 , Li 1.12 Mn 0.51 Ni 0.29 Co 0.05 Ta 0.03 O 2 , and Li 1.12 Mn 0.51 Ni 0.29 Co 0.05 V 0.03 O 2 .

12 . The positive electrode active material of claim 7 , wherein the Ni has an average oxidation state of about 2.

13 . A rechargeable lithium-ion battery comprising at least one lithium-ion battery cell, each lithium-ion battery cell including:
a positive electrode comprising a compound represented by formula 1 or formula 2:
Li 1.10 Mn 0.52 Ni (0.38-x) A (x-a) M a O 2   (1)

Li 1.12 Mn 0.51 Ni (0.37-x) A (x-a) M a O 2   (2)

wherein:
A is Co, Cr, or a combination thereof,
M is W +6 , Ta +5 , V +5 , or a combination thereof,
0<x<0.1,
0<a<0.04, and
3.8<average oxidation state of Mn ion<4.0;
a negative electrode including a negative active material; and an electrolyte contacting the positive electrode and the negative electrode.

14 . The rechargeable lithium-ion battery of claim 13 , wherein 0.01<x<0.09.

15 . The rechargeable lithium-ion battery of claim 13 , wherein 0<a≤0.03.

16 . The rechargeable lithium-ion battery of claim 13 , wherein 3.86≤average oxidation state of Mn ion≤3.98.

17 . The rechargeable lithium-ion battery of claim 13 includes a material selected from the group consisting of Li 1.10 Mn 0.52 Ni 0.33 Co 0.04 W 0.01 O 2 , Li 1.10 Mn 0.52 Ni 0.33 Co 0.04 Ta 0.01 O 2 , Li 1.10 Mn 0.52 Ni 0.33 Co 0.04 V 0.01 O 2 , Li 1.10 Mn 0.52 Ni 0.33 Co 0.03 W 0.02 O 2 , Li 1.10 Mn 0.52 Ni 0.33 Co 0.03 Ta 0.02 O 2 , Li 1.10 Mn 0.52 Ni 0.33 Co 0.03 V 0.02 O 2 , Li 1.12 Mn 0.51 Ni 0.29 Co 0.065 W 0.015 O 2 , Li 1.12 Mn 0.51 Ni 0.29 Co 0.065 Ta 0.015 O 2 , Li 1.12 Mn 0.51 Ni 0.29 Co 0.065 V 0.015 O 2 , Li 1.12 Mn 0.51 Ni 0.29 Co 0.05 W 0.03 O 2 , Li 1.12 Mn 0.51 Ni 0.29 Co 0.05 Ta 0.03 O 2 , and Li 1.12 Mn 0.51 Ni 0.29 Co 0.05 V 0.03 O 2 .

18 . The rechargeable lithium-ion battery of claim 13 , wherein each battery cell further includes a separator interposed between the positive electrode and the negative electrode.

19 . The rechargeable lithium-ion battery of claim 13 , wherein the Ni has an average oxidation state of about 2.

Assignees

• Ford Global Tech Llc

Inventors

• Lee Eunsung
• Paik Chi
• Lupescu Jason Aaron
• Cheng Yisun
• Liberatore Stephanie
• Fredrick Mary
• Kudla Robert J
• Kozarekar Deepali

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

• H01M4/525

  of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title

• H01M4/505 Primary

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

• C01G53/50

  of the type (MnO2)n-, e.g. Li(NixMn1-x)O2 or Li(MyNixMn1-x-y)O2 · CPC title