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
Negative active material and rechargeable lithium battery including same
US2024379944A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024379944-A1 |
| Application number | US-202318380353-A |
| Country | US |
| Kind code | A1 |
| Filing date | Oct 16, 2023 |
| Priority date | May 10, 2023 |
| Publication date | Nov 14, 2024 |
| Grant date | — |
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Abstract
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A negative active material and a rechargeable lithium battery including the negative active material, the negative active material includes a core including a carbon material; and a metal carbide on a surface of the core, wherein the metal of the metal carbide is Ti, Mo, Fe, Nb, Ta, W, or V.
First claim
Opening claim text (preview).
What is claimed is: 1 . A negative active material, comprising: a core including a carbon material; and a metal carbide on a surface of the core, wherein the metal of the metal carbide is Ti, Mo, Fe, Nb, Ta, W, or V. 2 . The negative active material as claimed in claim 1 , wherein: the metal carbide is represented by Chemical Formula 1: M x C y [Chemical Formula 1] in Chemical Formula 1, 1≤x≤2 and 1≤y≤3, and M is Ti, Mo, Fe, Nb, Ta, W, or V. 3 . The negative active material as claimed in claim 1 , wherein the metal carbide is TiC, Mo 2 C, Fe 2 C, NbC, TaC, WC, VC, or a combination thereof. 4 . The negative active material as claimed in claim 1 , wherein the metal carbide is included in the negative active material in an amount of about 0.5 wt % to about 20 wt %, based on a total weight of the negative active material. 5 . The negative active material as claimed in claim 1 , wherein the metal carbide is included in the negative active material in an amount of about 0.5 wt % to about 10 wt %, based on a total weight of the negative active material. 6 . The negative active material as claimed in claim 1 , wherein the core is included in the negative active material in an amount of about 80 wt % to about 99.5 wt %, based on a total weight of the negative active material. 7 . The negative active material as claimed in claim 1 , wherein the carbon material is crystalline carbon, amorphous carbon, or a combination thereof. 8 . The negative active material as claimed in claim 1 , wherein the carbon material is crystalline carbon. 9 . The negative active material as claimed in claim 1 , wherein the negative active material is prepared by: mixing the carbon material and a carbon precursor in a solvent to prepare a primary mixture; mixing the primary mixture and a metal precursor to prepare a secondary mixture; and heat-treating the secondary mixture. 10 . The negative active material as claimed in claim 9 , wherein the carbon precursor is glucose, sucrose, polyvinylpyrrolidone, polyvinyl alcohol, polyethylene, or a combination thereof. 11 . The negative active material as claimed in claim 9 , wherein the metal precursor is a metal alkoxide, a metal acetate, a metal hydroxide, or a combination thereof. 12 . The negative active material as claimed in claim 9 , wherein the heat-treating is performed under an atmosphere of nitrogen gas, argon gas, or a combination thereof. 13 . The negative active material as claimed in claim 9 , wherein the heat-treating is performed at about 500° C. to about 1,400° C. 14 . A rechargeable lithium battery, comprising: a negative electrode including the negative active material as claimed in claim 1 ; a positive electrode; and an electrolyte.
Assignees
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Classifications
Energy storage using batteries · CPC title
Negative electrodes · CPC title
Li-accumulators · CPC title
of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title
Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title
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- What does patent US2024379944A1 cover?
- A negative active material and a rechargeable lithium battery including the negative active material, the negative active material includes a core including a carbon material; and a metal carbide on a surface of the core, wherein the metal of the metal carbide is Ti, Mo, Fe, Nb, Ta, W, or V.
- Who is the assignee on this patent?
- Samsung Sdi Co Ltd, Univ Industry Cooperation Group Kyung Hee Univ
- What technology area does this patent fall under?
- Primary CPC classification H01M4/366. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Nov 14 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).