Core-shell electrochemically active particles with modified microstructure and use for secondary battery electrodes
US11515529B2 · kind B2 · utility
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Key dates
| Filing date | Feb 8, 2018 |
| Grant date | Nov 29, 2022 |
| Priority date | — |
| Expiry date | Mar 4, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided are electrochemically active materials capable of absorbing and desorbing an ion suitable for use in secondary cells. The provided materials include a core consisting of a plurality of silicon particulates of a particle size less than 1 micrometer, the particulates intermixed with and surrounded by a silicon metal alloy composite, and an electrochemically active buffering shell layer enveloping at least a portion of the core such that the resulting electrochemically active material has an overall particle size with a maximum linear dimension of greater than one micrometer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.