Positive Electrode Active Material For Secondary Battery, And Method Of Preparing The Same
US-2020274152-A1 · Aug 27, 2020 · US
Positive electrode for secondary battery, method of preparing the same, and lithium secondary battery including the same
US12132200B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12132200-B2 |
| Application number | US-201917052037-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 6, 2019 |
| Priority date | Sep 7, 2018 |
| Publication date | Oct 29, 2024 |
| Grant date | Oct 29, 2024 |
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Abstract
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The present disclosure provides a positive electrode for a secondary battery which includes a positive electrode active material and a lithium-based alloy. Also, the present disclosure provides a method of preparing the positive electrode for a secondary battery which includes the steps of forming a positive electrode material mixture layer including a positive electrode active material and forming a coating layer including a lithium-based alloy on the positive electrode material mixture layer, or forming a positive electrode material mixture layer by coating a positive electrode collector with a slurry for forming a positive electrode, which includes a positive electrode active material and a lithium-based alloy, and rolling the positive electrode collector.
First claim
Opening claim text (preview).
The invention claimed is: 1. A positive electrode for a secondary battery, the positive electrode comprising a positive electrode active material and a lithium-based alloy, and a positive electrode material mixture layer in which the positive electrode active material and the lithium-based alloy are mixed, wherein the positive electrode active material is a lithium transition metal oxide including at least one transition metal cation selected from the group consisting of cobalt (Co), nickel (Ni), and manganese (Mn), and wherein the lithium-based alloy comprises at least one selected from the group consisting of a Li—Al-based alloy, a Li—Si-based alloy, a Li—Sn-based alloy, a Li—Bi-based alloy, and a Li—Sb-based alloy. 2. The positive electrode for a secondary battery of claim 1 , wherein the lithium-based alloy is a Li—Al-based alloy. 3. The positive electrode for a secondary battery of claim 2 , wherein the Li—Al-based alloy contains 30 at % to 80 at % of lithium and 20 at % to 70 at % of aluminum. 4. The positive electrode for a secondary battery of claim 1 , wherein the positive electrode active material and the lithium-based alloy are included in a weight ratio of 99:1 to 1:99. 5. A lithium secondary battery comprising a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode, wherein the positive electrode is the positive electrode for a secondary battery of claim 1 . 6. A method of preparing a positive electrode for a secondary battery, the method comprising: forming a positive electrode material mixture layer by coating a positive electrode collector with a slurry for forming a positive electrode, which includes a mixture of a positive electrode active material and a lithium-based alloy, and rolling the positive electrode collector, wherein the positive electrode active material is a lithium transition metal oxide including at least one transition metal cation selected from the group consisting of cobalt (Co), nickel (Ni), and manganese (Mn), and wherein the lithium-based alloy comprises at least one selected from the group consisting of a Li—Al-based alloy, a Li—Si-based alloy, a Li—Sn-based alloy, a Li—Bi-based alloy, and a Li—Sb-based alloy. 7. The method of claim 6 , wherein, in the forming of the positive electrode material mixture layer by coating the positive electrode collector with the slurry for forming a positive electrode, which includes the positive electrode active material and the lithium-based alloy, and rolling the positive electrode collector, the slurry for forming a positive electrode does not comprise an organic solvent. 8. The method of claim 6 , wherein the positive electrode active material and the lithium-based alloy are included in a weight ratio of 99:1 to 1:99.
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Classifications
Positive electrodes · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title
of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title
as mixtures · CPC title
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- What does patent US12132200B2 cover?
- The present disclosure provides a positive electrode for a secondary battery which includes a positive electrode active material and a lithium-based alloy. Also, the present disclosure provides a method of preparing the positive electrode for a secondary battery which includes the steps of forming a positive electrode material mixture layer including a positive electrode active material and for…
- Who is the assignee on this patent?
- Lg Energy Solution Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/382. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 29 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).