Patent · US Active

Sulfur-carbon composite comprising a highly graphitic carbon material for lithium-sulfur batteries and process for preparing the same

US10586979B2 · kind B2 · utility

1Cited by

0References

7Claims

0Family size

Assignees

Robert Bosch GmbH · DE
Institute of Chemistry Chinese Academy of Sciences · CN

Inventors

Yunhua Chen · Shanghai, CN
Juan Zhang · San Diego, US
NaHong Zhao · Shanghai, CN
Yaxia Yin · Beijing, CN
Yuguo Guo · Beijing, CN

Key dates

Filing date	Nov 13, 2015
Grant date	Mar 10, 2020
Priority date	—
Expiry date	Nov 17, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Provided is a sulfur-carbon composite comprising a highly graphitic carbon material and sulfur, wherein the carbon material has a high graphitization degree characterized by a ratio of the intensity of G band to the intensity of D band in Raman spectrum being more than 1.0, the material is either a graphitic microporous carbon substrate, or a core-shell material with a conductive core coated by a graphitic microporous carbon layer, and wherein sulfur is encapsulated into the porous structure of the carbon material. Also provided are an electrode and a lithium-sulfur battery comprising the sulfur-carbon composite, and a process for preparing the sulfur-carbon composite.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.