Sulfur based active material for a positive electrode
US9437871B2 · kind B2 · utility
39Cited by
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19Claims
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Key dates
| Filing date | Feb 5, 2014 |
| Grant date | Sep 6, 2016 |
| Priority date | — |
| Expiry date | Aug 9, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A sulfur based active material has a core-shell structure including a hollow core and a porous carbon shell surrounding the hollow core. Sulfur is present in a portion of the hollow core. A polymer shell coating is formed on the porous carbon shell. The polymer shell coating includes nitrogen atoms that bond to carbon atoms of the porous carbon shell so that the porous carbon shell is a nitrogen-confused porous carbon shell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.