Li2S batteries having high capacity, high loading, and high coulombic efficiency
US10170756B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Dec 16, 2015 |
| Grant date | Jan 1, 2019 |
| Priority date | — |
| Expiry date | Mar 23, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/842
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrochemical device includes a cathode containing graphene-wrapped Li2S nanoparticles. The graphene-wrapped Li2S nanoparticles are prepared by a method including heating lithium metal, and a carbon-sulfur source or a carbon source and a sulfur source in a sealed container at a temperature to produce lithium vapors, and vapors of the carbon-sulfur source or vapors of the carbon source and vapors of the sulfur source; and cooling the sealed container to produce the graphene-wrapped Li2S nanoparticles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.