Positive electrode active material and preparation method thereof, positive electrode plate, secondary battery, battery module, battery pack, and electric apparatus
US-2024429384-A1 · Dec 26, 2024 · US
Method for producing nickel-rich cathode active material and method for producing cathode electrode
US2025276912A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025276912-A1 |
| Application number | US-202318858961-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 14, 2023 |
| Priority date | Apr 22, 2022 |
| Publication date | Sep 4, 2025 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
To provide: a range of gas mixture compositions that make it possible to hinder Li/Ni cation mixing and transition metal peroxidation; and a method for producing a nickel-rich cathode active material, comprising a firing process using the gas mixtures. The method for producing a nickel-rich cathode active material comprises a firing step, in which a cathode precursor containing at least a predetermined amount of nickel, and a metal oxide solid raw material containing lithium raw material, are fired in a reactor having an atmosphere comprising a gas mixture containing oxygen in the range of 94% by volume to 98% by volume. The oxygen content of the gas mixture is preferably 95% by volume to 97% by volume.
First claim
Opening claim text (preview).
1 . A method for producing a nickel-rich cathode active material, comprising: a firing step, in which a cathode precursor containing at least a predetermined amount of nickel, and a metal oxide solid raw material containing lithium raw material, are fired in a reactor having an atmosphere comprising a gas mixture containing 94% by volume to 98% by volume of oxygen, wherein the gas components other than the oxygen in the gas mixture comprise one or more gas selected from argon, nitrogen, helium, and krypton. 2 . The method for producing a nickel-rich cathode active material according to claim 1 , wherein, the gas component other than oxygen is argon, and an argon content of the atmosphere is 2% by volume to 5% by volume. 3 . The method for producing a nickel-rich cathode active material according to claim 1 , wherein, the gas components other than oxygen are argon and nitrogen and the argon content of the atmosphere is greater than the nitrogen content of the atmosphere. 4 . The method for producing a nickel-rich cathode active material according to claim 3 , wherein the nitrogen content is >0% by volume to 2% by volume. 5 . (canceled)
Assignees
Inventors
Classifications
Electric properties · CPC title
defined by measured X-ray, neutron or electron diffraction data · CPC title
Energy storage using batteries · CPC title
by unit-cell parameters, atom positions or structure diagrams · CPC title
Positive electrodes · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2025276912A1 cover?
- To provide: a range of gas mixture compositions that make it possible to hinder Li/Ni cation mixing and transition metal peroxidation; and a method for producing a nickel-rich cathode active material, comprising a firing process using the gas mixtures. The method for producing a nickel-rich cathode active material comprises a firing step, in which a cathode precursor containing at least a prede…
- Who is the assignee on this patent?
- Air Liquide
- What technology area does this patent fall under?
- Primary CPC classification H01M4/525. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Sep 04 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).