Sulfurized-carbon cathode with conductive carbon framework
US12255308B2 · kind B2 · utility
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Key dates
| Filing date | Mar 25, 2021 |
| Grant date | Mar 18, 2025 |
| Priority date | — |
| Expiry date | Jul 18, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cathode active surface includes a conductive framework of tangled nanofibers with lumps of amorphous carbon-sulfur distributed within them. The amorphous carbon-sulfur lumps are of carbon bonded to sulfur via carbon-sulfur chemical bonds and to the nanofibers via chemical bonds. The strength of the chemical bonds secures sulfur atoms within electrode to suppress the formation of undesirable polysulfides when in contact with an electrolyte. The tangled nanofibers bind the amorphous carbon-sulfur lumps and enhance thermal and electrical conductivities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.