Process for producing a silicon-carbon composite
US-2020317529-A1 · Oct 8, 2020 · US
Amorphous silicon-carbon composite, preparation method therefor, and lithium secondary battery comprising same
US11616233B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11616233-B2 |
| Application number | US-201916769909-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 12, 2019 |
| Priority date | Mar 14, 2018 |
| Publication date | Mar 28, 2023 |
| Grant date | Mar 28, 2023 |
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.
An amorphous silicon-carbon composite, a method for preparing the amorphous silicon-carbon composite using a pyrolysis method, a negative electrode for a lithium secondary battery, and a lithium secondary battery including the same.
First claim
Opening claim text (preview).
The invention claimed is: 1. An amorphous silicon-carbon composite, comprising: silicon and carbon mixed at a molecular level, wherein the amorphous silicon-carbon composite is in the form of particles having a diameter of 10 nm to 1 μm, wherein the amorphous silicon-carbon composite is formed by a pyrolysis deposition process for a silicon source and a carbon source, wherein the amorphous silicon-carbon composite comprises a silicon-carbon covalent bond, a silicon-silicon covalent bond, and a carbon-carbon covalent bond, and wherein the silicon-carbon covalent bond, the silicon-silicon covalent bond, and the carbon-carbon covalent bond are irregularly present in the amorphous silicon-carbon composite. 2. The amorphous silicon-carbon composite of claim 1 , wherein the amorphous silicon-carbon composite further comprises a heteroatom, and further comprises at least one bond selected from the group consisting of a heteroatom-carbon covalent bond and a heteroatom-silicon covalent bond. 3. The amorphous silicon-carbon composite of claim 2 , wherein the heteroatom comprises at least one selected from the group consisting of boron, phosphorus, nitrogen, and sulfur. 4. The amorphous silicon-carbon composite of claim 1 , wherein the amorphous silicon-carbon composite comprises silicon and carbon in a weight ratio of 3:7 to 7:3. 5. The amorphous silicon-carbon composite of claim 1 , wherein the amorphous silicon-carbon composite has a density of 0.2 g/cc to 0.6 g/cc. 6. A negative electrode for a lithium secondary battery comprising an active material; a conductive material; and a binder, wherein the active material comprises the amorphous silicon-carbon composite of claim 1 . 7. A lithium secondary battery comprising a positive electrode; a negative electrode; a separator interposed between the positive electrode and the negative electrode; and an electrolyte solution, wherein the negative electrode is the negative electrode of claim 6 .
Assignees
Inventors
Classifications
Silicon or alloys based on silicon · CPC title
Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title
Nanometer sized, i.e. from 1-100 nanometer · CPC title
as mixtures · CPC title
Micrometer sized, i.e. from 1-100 micrometer · 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 US11616233B2 cover?
- An amorphous silicon-carbon composite, a method for preparing the amorphous silicon-carbon composite using a pyrolysis method, a negative electrode for a lithium secondary battery, and a lithium secondary battery including the same.
- Who is the assignee on this patent?
- Lg Chemical Ltd, Ulsan Nat Inst Science & Tech Unist, Lg Energy Solution Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/587. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 28 2023 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).