1. A Carbon-Sulfur Hybrid with Pomegranate-like Structure for Lithium-Sulfur Batteries.
- Author
-
Shi, Yanting, Lv, Wei, Niu, Shuzhang, He, Yanbing, Zhou, Guangmin, Chen, Guohua, Li, Baohua, Yang, Quan ‐ Hong, and Kang, Feiyu
- Subjects
LITHIUM sulfur batteries ,POMEGRANATE ,CHEMICAL structure ,OXIDATION ,CARBONIZATION - Abstract
A carbon-sulfur hybrid with pomegranate-like core-shell structure, which demonstrates a high rate performance and relatively high cyclic stability, is obtained through carbonization of a carbon precursor in the presence of a sulfur precursor (FeS
2 ) and a following oxidation of FeS2 to sulfur by HNO3 . Such a structure effectively protects the sulfur and leaves enough buffer space after Fe3+ removal and, at the same time, has an interconnected conductive network. The capacity of the obtained hybrid is 450 mA h g−1 under the current density of 5 C. This work provides a simple strategy to design and prepare various high-performance carbon-sulfur hybrids for lithium-sulfur batteries. [ABSTRACT FROM AUTHOR]- Published
- 2016
- Full Text
- View/download PDF