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
Positive Electrode Active Material for Lithium Secondary Battery, Method of Preparing the Same, and Positive Electrode for Lithium Secondary Battery and Lithium Secondary Battery which Include the Positive Electrode Active Material
US2024063380A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024063380-A1 |
| Application number | US-202318385577-A |
| Country | US |
| Kind code | A1 |
| Filing date | Oct 31, 2023 |
| Priority date | Dec 11, 2017 |
| Publication date | Feb 22, 2024 |
| Grant date | — |
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- Title
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Abstract
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A method of preparing a positive electrode active material includes mixing a positive electrode active material precursor with a lithium raw material and performing a primary heat treatment, and performing a secondary heat treatment at a temperature lower than that of the primary heat treatment to prepare a positive electrode active material. The primary heat treatment and the secondary heat treatment are respectively performed in an oxygen atmosphere. The secondary heat treatment is performed in the oxygen atmosphere with an oxygen concentration of 50% or more.
First claim
Opening claim text (preview).
1 . A method of preparing a positive electrode active material, the method comprising: mixing a positive electrode active material precursor with a lithium raw material and performing a primary heat treatment; and performing a secondary heat treatment at a temperature lower than that of the primary heat treatment to prepare a positive electrode active material, wherein the primary heat treatment and the secondary heat treatment are respectively performed in an oxygen atmosphere, and wherein the secondary heat treatment is performed in the oxygen atmosphere with an oxygen concentration of 50% or more. 2 . The method of claim 1 , wherein the primary heat treatment is performed at a temperature of 800° C. or more. 3 . The method of claim 1 , wherein the primary heat treatment is performed in the oxygen atmosphere with an oxygen concentration of 50% or more. 4 . The method of claim 1 , wherein the primary heat treatment is performed for 10 hours to 20 hours. 5 . The method of claim 1 , wherein the secondary heat treatment is performed at a temperature of greater than 600° C. to less than 800° C. 6 . The method of claim 1 , wherein the secondary heat treatment is performed for 2 hours to 12 hours.
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Classifications
- H01M4/505Primary
of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title
- C01G53/50Primary
of the type (MnO2)n-, e.g. Li(NixMn1-x)O2 or Li(MyNixMn1-x-y)O2 · CPC title
Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title
- H01M4/366Primary
as layered products · CPC title
- H01M4/525Primary
of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title
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- What does patent US2024063380A1 cover?
- A method of preparing a positive electrode active material includes mixing a positive electrode active material precursor with a lithium raw material and performing a primary heat treatment, and performing a secondary heat treatment at a temperature lower than that of the primary heat treatment to prepare a positive electrode active material. The primary heat treatment and the secondary heat tr…
- Who is the assignee on this patent?
- Lg Chemical Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/505. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Feb 22 2024 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).