Lithium-sulfur battery and methods of preventing insoluble solid lithium-polysulfide deposition
US9455447B2 · kind B2 · utility
8Cited by
11References
36Claims
0Family size
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Key dates
| Filing date | Sep 26, 2013 |
| Grant date | Sep 27, 2016 |
| Priority date | — |
| Expiry date | Aug 4, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49108
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved lithium-sulfur battery containing a surface-functionalized carbonaceous material. The presence of the surface-functionalized carbonaceous material generates weak chemical bonds between the functional groups of the surface-functionalized carbonaceous material and the functional groups of the polysulfides, which prevents the polysulfide migration to the battery anode, thereby providing a battery with relatively high energy density and good partial discharge efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.