Negative electrode active material including titanium-based composite, method of preparing the same and lithium secondary battery including the same
US-2018198155-A1 · Jul 12, 2018 · US
Negative electrode for lithium secondary battery and method of manufacturing the same
US12424613B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12424613-B2 |
| Application number | US-202418770656-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 12, 2024 |
| Priority date | Jun 23, 2022 |
| Publication date | Sep 23, 2025 |
| Grant date | Sep 23, 2025 |
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Abstract
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Provided are a negative electrode for a lithium secondary battery and a method of manufacturing the same. The negative electrode for a lithium secondary battery according to an embodiment of the present invention includes a silicon-based material doped with lithium having a content A, iron having a content B, and aluminum having a content C,wherein, by ICP analysis,5,000 ppm≤A≤150,000 ppm,5 ppm≤B≤1,500 ppm,2.5 ppm≤C≤1,000 ppm.
First claim
Opening claim text (preview).
What is claimed is: 1. A negative electrode for a lithium secondary battery, comprising: a silicon-based material doped with lithium having a content A, iron having a content B, and aluminum having a content eC, wherein, by ICP analysis, 5 , 000 ppm ≤ A ≤ 150 , 000 ppm , 5 ppm ≤ B ≤ 1 , 500 ppm , 2.5 ppm ≤ C ≤ 1 , 000 ppm . 2. The negative electrode for a lithium secondary battery of claim 1 , wherein the contents of elements in the negative electrode active material layer further satisfy the following relation: 100 ppm ≤ B + C ≤ 3 , 000 ppm . 3. The negative electrode for a lithium secondary battery of claim 1 , further comprising artificial graphite. 4. The negative electrode for a lithium secondary battery of claim 1 , further comprising single-walled carbon nanotubes. 5. The negative electrode for a lithium secondary battery of claim 1 , wherein the silicon-based negative electrode active material further includes lithium. 6. The negative electrode for a lithium secondary battery of claim 1 , wherein the silicon-based negative electrode active material further includes a lithium silicate represented by the following Chemical Formula 1: Li x SiyO z [Chemical Formula 1] wherein 1≤x≤6, 1≤y≤4, and 0<z≤7. 7. A lithium secondary battery comprising the negative electrode of claim 1 . 8. A negative electrode for a lithium secondary battery comprising a silicon-based material selected from the group consisting of Si, SiO x (0<x≤2), a Si-containing alloy, and Si/C composite, or a combination thereof including iron and aluminum, wherein the silicon-based material doped with lithium having a content A, iron having a content B, and aluminum having a content eC, wherein, by ICP analysis, 5 , 000 ppm ≤ A ≤ 150 , 000 ppm , 5 ppm ≤ B ≤ 1 , 500 ppm , 2.5 ppm ≤ C ≤ 1 , 000 ppm .
Assignees
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Classifications
Physical characteristics, e.g. porosity, surface area · CPC title
Carbon or graphite · CPC title
for non-aqueous cells (H01M4/485 takes precedence) · CPC title
- H01M4/134Primary
Electrodes based on metals, Si or alloys · CPC title
Negative electrodes · CPC title
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- What does patent US12424613B2 cover?
- Provided are a negative electrode for a lithium secondary battery and a method of manufacturing the same. The negative electrode for a lithium secondary battery according to an embodiment of the present invention includes a silicon-based material doped with lithium having a content A, iron having a content B, and aluminum having a content C,wherein, by ICP analysis,5,000 ppm≤A≤150,000 ppm,5 ppm…
- Who is the assignee on this patent?
- Sk On Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/134. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 23 2025 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).