Lithium-sulfur battery cathode formed from multiple carbonaceous regions
US11404692B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2021 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Dec 28, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cathode may be formed form a first porous carbonaceous region and a second porous carbonaceous region positioned adjacent to the first porous carbonaceous region. Each region may have a corresponding concentration level of porous carbonaceous materials. Specifically, each region may include pores and non-tri-zone particles and tri-zone particles. In one implementation, each tri-zone particle may include carbon fragments intertwined with each other and separated from one another by mesopores. Each tri-zone particle may also include a deformable perimeter that may coalesce with adjacent non-tri-zone particles or tri-zone particles. In some aspects, the tri-zone particles may include aggregates formed by several tri-zone particles joined together. In some aspects, mesopores may be interspersed throughout the aggregates. Each tri-zone particle may also include agglomerates, where each agglomerate includes a multitude of the aggregates joined together. In some aspects, macropores may be interspersed throughout the aggregates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.