Negative electrode material for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery
US-2020020932-A1 · Jan 16, 2020 · US
Negative electrode material, and preparation method therefor and use thereof
US12489114B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12489114-B2 |
| Application number | US-201917286016-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 1, 2019 |
| Priority date | Dec 7, 2018 |
| Publication date | Dec 2, 2025 |
| Grant date | Dec 2, 2025 |
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- Title
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Abstract
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A negative electrode material includes a composite matrix material and a carbon coating coated on the composite matrix material. The composite matrix material includes lithium silicate, silicon oxide, an activator, and silicon embedded in the lithium silicate and the silicon oxide.
First claim
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What is claimed is: 1 . A negative electrode material, wherein the negative electrode material comprises a composite matrix material and a carbon coating coated on the composite matrix material, wherein the composite matrix material comprises lithium silicate, an oxide of silicon, an activator and silicon, which is embedded in the lithium silicate and the oxide of silicon, wherein the lithium silicate accounts for 30 wt %-70 wt % of the negative electrode material before the negative electrode material is prepared into a lithium ion battery, wherein the activator is to activate the lithium silicate and comprises any one or a combination of at least two of potassium, magnesium, aluminum, potassium oxide, magnesium oxide and aluminum oxide. 2 . A lithium ion battery, wherein the lithium ion battery comprises the negative electrode material according to claim 1 . 3 . A lithium ion battery, wherein the lithium ion battery comprises negative electrode material, wherein the negative electrode material of the lithium ion battery is the negative electrode material according to claim 1 . 4 . The negative electrode material according to claim 1 , wherein the oxide of silicon accounts for 1 wt %-13 wt % of the negative electrode material. 5 . The negative electrode material according to claim 1 , wherein the carbon accounts for 0.05 wt %-25 wt % of the negative electrode material. 6 . The negative electrode material according to claim 1 , wherein the activator accounts for 1 wt %-10 wt % of the negative electrode material. 7 . The negative electrode material according to claim 1 , wherein the silicon accounts for 20 wt %-40 wt % of the negative electrode material. 8 . The negative electrode material according to claim 1 , wherein the lithium silicate comprises any one of lithium orthosilicate, lithium metasilicate, lithium disilicate and lithium pentasilicate or a combination of at least two therefrom. 9 . The negative electrode material according to claim 1 , wherein a molecular formula of the oxide of silicon is SiO x , where x is a constant of 0.5-1.8.
Assignees
Inventors
Classifications
Negative electrodes · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
Carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title
for non-aqueous cells (H01M4/485 takes precedence) · CPC title
Silicon or alloys based on silicon · CPC title
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- What does patent US12489114B2 cover?
- A negative electrode material includes a composite matrix material and a carbon coating coated on the composite matrix material. The composite matrix material includes lithium silicate, silicon oxide, an activator, and silicon embedded in the lithium silicate and the silicon oxide.
- Who is the assignee on this patent?
- Btr New Mat Group Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/364. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 02 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).