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Production method of porous silicon clathrate electrode active material and production method of lithium-ion battery
US2024396039A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024396039-A1 |
| Application number | US-202418415996-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 18, 2024 |
| Priority date | May 24, 2023 |
| Publication date | Nov 28, 2024 |
| Grant date | — |
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- Title
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Abstract
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The disclosed methods of making porous silicon clathrate electrode active materials include (a) providing a composition comprising silicon clathrate particles comprising a type I silicon clathrate and a type II silicon clathrate, and (b) removing at least a portion of the type I silicon clathrate to form pores in the silicon clathrate particles or increasing pores in the silicon clathrate particles.
First claim
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What is claimed is: 1 . A production method of a porous silicon clathrate electrode active material, the production method comprising: (a) providing a composition including silicon clathrate particles containing a type I silicon clathrate and a type II silicon clathrate; and (b) removing at least part of the type I silicon clathrate to form pores in the silicon clathrate particles, or to increase pores in the silicon clathrate particles. 2 . The production method according to claim 1 , wherein a proportion of mass of the type I silicon clathrate as to a total mass of the composition containing the silicon clathrate particles is 5.0% by mass or more. 3 . The production method according to claim 1 , wherein in (b), the silicon clathrate particles are brought into contact with a hydrogen fluoride solution to remove at least part of the type I silicon clathrate. 4 . The production method according to claim 3 , wherein a solvent of the hydrogen fluoride solution is a mixed solvent of water and an organic solvent. 5 . The production method according to claim 1 , wherein the silicon clathrate electrode active material is used for a cathode active material of a lithium-ion battery. 6 . A production method of a lithium-ion battery, the production method comprising: producing a silicon clathrate electrode active material by the production method according to claim 1 ; and forming an electrode active material layer containing the silicon clathrate electrode active material.
Assignees
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Classifications
Negative electrodes · CPC title
Physical characteristics, e.g. porosity, surface area · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
Construction or manufacture · CPC title
- H01M4/386Primary
Silicon or alloys based on silicon · CPC title
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- What does patent US2024396039A1 cover?
- The disclosed methods of making porous silicon clathrate electrode active materials include (a) providing a composition comprising silicon clathrate particles comprising a type I silicon clathrate and a type II silicon clathrate, and (b) removing at least a portion of the type I silicon clathrate to form pores in the silicon clathrate particles or increasing pores in the silicon clathrate parti…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/386. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Nov 28 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).