# US 2023/0053476 A1 · Positive-electrode active material for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery

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- Number: US 2023/0053476 A1
- Document ID: US20230053476A1
- Status: Published application
- Kind: A1
- Application number: 17/800,357
- Filed: 2021-02-10
- Published: 2023-02-23
- Earliest claimed: 2020-02-28
- Assignees: Panasonic Intellectual Property Management Co., Ltd.
- Applicants: Panasonic Intellectual Property Management Co., Ltd.
- Inventors: Youshin Lee; Ryuichi Natsui; Mitsuhiro Hibino; Kensuke Nakura
- Web page: https://patentgrep.com/patent/US20230053476A1

## CPC

- H01M 4/525: of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
- C01G 45/1228: of the type (MnO2)-, e.g. LiMnO2 or Li(MxMn1-x)O2
- C01G 53/50: of the type (MnO2)n-, e.g. Li(NixMn1-x)O2 or Li(MyNixMn1-x-y)O2
- C01G 53/502: containing lithium and cobalt
- H01M 4/485: of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence)
- H01M 4/505: of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- H01M 50/46: Separators, membranes or diaphragms characterised by their combination with electrodes
- C01P 2002/52: containing elements as dopants
- H01M 2004/028: {Positive electrodes}
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- C01G: COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts or peroxyacids C01B15/00; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium, or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds containing nitrogen, other non-metals and metal C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; compounds having molecular sieve properties but not having base-exchange properties C01B37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B39/00; cyanides C01C3/08; salts of cyanamide C01C3/16; thiocyanates C01C3/20)
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

This positive-electrode active material for a non-aqueous electrolyte secondary battery contains a lithium and transition metal composite oxide represented by the composition formula: LixMnyNixGeaMbO2-cFc (where, M is at least one elements selected from Ti, Co, Si, Al, Nb, W, Mo, P, Ca, Mg, Sb, Na, B, V, Cr, Fe, Cu, Zn, Sr, Zr, Ru, K, and Bi; 1.0<x≤1.2; 0.4≤0.8; 0≤z≤0.4; 0<a<0.01; 0<b<0.03; 0<c<0.1; and x+y+z+a+b≤2).

## Claims

### Claim 1

A positive electrode active material for a non-aqueous electrolyte secondary battery, the positive electrode active material comprising
a lithium-transition metal composite oxide represented by a composition formula LixMnyNizGeaMbO2-cFc (wherein M is at least one element selected from Ti, Co, Si, Al, Nb, W, Mo, P, Ca, Mg, Sb, Na, B, V, Cr, Fe, Cu, Zn, Sr, Zr, Ru, K, and Bi, 1.0<x≤1.2, 0.4≤y≤0.8, 0≤z≤0.4, 0<a<0.01, 0<b<0.03, 0<c<0.1, and x+y+z+a+b≤2).

### Claim 2 (depends on 1)

The positive electrode active material for the non-aqueous electrolyte secondary battery according to claim 1, wherein
in the composition formula LixMnyNizGeaMbO2-cFc, M is at least one element selected from Co and Al, and a molar ratio (b) of M is in a range of 0<b<0.02.

### Claim 3 (depends on 1)

The positive electrode active material for the non-aqueous electrolyte secondary battery according to claim 1, wherein
in the composition formula LixMnyNizGeaMbO2-cFc, a molar ratio (a) of Ge is in a range of 0.002≤a≤0.005.

### Claim 4 (depends on 1)

A non-aqueous electrolyte secondary battery comprising:
a positive electrode including the positive electrode active material according to claim 1;
a negative electrode;
a separator interposed between the positive electrode and the negative electrode; and
a non-aqueous electrolyte.