Patent · US Active

Doped carbon-sulfur species nanocomposite cathode for Li—S batteries

US9225011B2 · kind B2 · utility

2Cited by

6References

16Claims

0Family size

Assignee

The Penn State Research Foundation · US

Inventors

Donghai Wang · New Orleans, US
Tianren Xu · State College, US
Jiangxuan Song · State College, US

Key dates

Filing date	Jul 10, 2013
Grant date	Dec 29, 2015
Priority date	—
Expiry date	Mar 6, 2034

Classification

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

Abstract

We report a heteroatom-doped carbon framework that acts both as conductive network and polysulfide immobilizer for lithium-sulfur cathodes. The doped carbon forms chemical bonding with elemental sulfur and/or sulfur compound. This can significantly inhibit the diffusion of lithium polysulfides in the electrolyte, leading to high capacity retention and high coulombic efficiency.

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