Lithium ion battery negative electrode material and preparation method therefor
US11967708B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Nov 29, 2018 |
| Grant date | Apr 23, 2024 |
| Priority date | — |
| Expiry date | Dec 9, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed are a lithium ion battery negative electrode material and a preparation method therefor. The negative electrode material comprises SiOy (0.2<y<0.9) and an M compound, wherein M is a metal. The method of the present application comprises: subjecting a raw material comprising a SiOx material and the metal M to a redox reaction, wherein the O/Si ratio, i.e. x, of the SiOx (0.5<x<1.5) material is adjusted to y (0.2<y<0.9), and at the same time, the metal M is oxidized to obtain the M compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.