Silicon anode materials
US10637048B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2018 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | May 30, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A silicon anode material for an electrochemical cell that cycles lithium and methods of formation relating thereto are provided. The silicon anode material comprises a plurality of carbon-encased silicon clusters, where each carbon-encased silicon cluster includes a volume of silicon nanoparticles encased in a carbon shell having an interior volume greater than the volume of the silicon nanoparticles. The method of making the silicon anode material includes forming a plurality of precursor clusters, where each precursor silicon-based cluster comprises a volume of SiOx nanoparticles (x≤2). The method further includes carbon coating each of the precursor clusters to form a plurality of carbon-coated SiOx clusters; and reducing the SiOx nanoparticles in each of the carbon-coated SiOx clusters to form the silicon anode material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.