Method for preparing amorphous silicon powder for anode material of lithium ion battery
US11834339B2 · kind B2 · utility
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Key dates
| Filing date | Apr 11, 2022 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Apr 11, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for preparing an amorphous silicon powder for an anode material of a lithium-ion battery is disclosed. The amorphous silicon powder is prepared by reducing an oxide of silicon, wherein an X-ray diffraction peak of an amorphous silicon material is weak, and the amorphous silicon material is of an amorphous structure. A structural formula of the oxide of silicon is SiOx, wherein 0<x≤2. The reduction refers to vapor phase reduction, a vapor phase reduction atmosphere is a mixed gas of hydrogen and carbon monoxide, a reduction temperature ranges from 100° C. to 700° C., and a reduction time ranges from 2 h to 72 h.
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