Flexible all-solid-state lithium-ion secondary battery and preparation method thereof
US-2020099090-A1 · Mar 26, 2020 · US
Interface functional layer and preparation method thereof, and lithium-ion battery
US12548853B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12548853-B2 |
| Application number | US-202218148975-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 30, 2022 |
| Priority date | Aug 31, 2020 |
| Publication date | Feb 10, 2026 |
| Grant date | Feb 10, 2026 |
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- Title
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Abstract
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This application relates to an interface functional layer and a preparation method thereof, and a lithium-ion battery, where the interface functional layer includes a cyclic ether compound, a lithium salt, an auxiliary agent and a ceramic powder in a mass ratio of 50-90:5-30:5-40:0-5. In this application, the interface functional layer is provided between a positive and/or negative electrode and a solid electrolyte, thereby inhibiting the uneven deposition of lithium-ions at interfacial gaps, reducing the interface impedance, and meanwhile improving the interfacial stability.
First claim
Opening claim text (preview).
What is claimed is: 1 . A preparation method of an interface functional layer-for a lithium-ion battery, wherein the interface functional layer comprises a cyclic ether compound, a lithium salt, an auxiliary agent and a ceramic powder in a mass ratio of (50-90): (5-30): (5-40): (0-5); the preparation method comprises the following steps: mixing the cyclic ether compound, the lithium salt, the auxiliary agent and the ceramic powder evenly to obtain a mixed solution, attaching the mixed solution to a positive electrode, a negative electrode and/or a solid electrolyte, and performing a curing treatment to obtain the interface functional layer; wherein the mixing is performed under stirring, the stirring having a speed of 200-1000 rpm/min. 2 . The preparation method of the interface functional layer according to claim 1 , wherein the negative electrode is selected from at least one of a metal lithium negative electrode or a lithium alloy negative electrode, and the metal lithium is selected from one of molten metal lithium, lithium powder and lithium ribbon, and the lithium alloy is selected from one of Li-In alloy, Li-Al alloy, Li-Sn alloy, Li-Mg alloy and Li-Ge alloy. 3 . The preparation method of the interface functional layer according to claim 1 , wherein the stirring is performed for 1-24h. 4 . The preparation method of the interface functional layer according to claim 1 , wherein the attaching is performed by selecting from one or more of blade coating, spray coating, tape casting and soaking. 5 . The preparation method of the interface functional layer according to claim 1 , wherein a temperature of the curing treatment is 25-60° C.
Assignees
Inventors
Classifications
- H01M10/0525Primary
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
Inhibitors, e.g. gassing inhibitors, corrosion inhibitors · CPC title
Lithium (H01M4/405 takes precedence) · CPC title
as layered products · CPC title
Electrodes based on metals, Si or alloys · CPC title
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Frequently asked questions
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- What does patent US12548853B2 cover?
- This application relates to an interface functional layer and a preparation method thereof, and a lithium-ion battery, where the interface functional layer includes a cyclic ether compound, a lithium salt, an auxiliary agent and a ceramic powder in a mass ratio of 50-90:5-30:5-40:0-5. In this application, the interface functional layer is provided between a positive and/or negative electrode an…
- Who is the assignee on this patent?
- Zhuhai Cosmx Battery Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0525. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 10 2026 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).