Dissemin is shutting down on January 1st, 2025

Published in

Wiley, Angewandte Chemie International Edition, 44(54), p. 12886-12890, 2015

DOI: 10.1002/anie.201506972

Wiley, Angewandte Chemie, 44(127), p. 13078-13082, 2015

DOI: 10.1002/ange.201506972

Links

Tools

Export citation

Search in Google Scholar

Hollow Carbon Nanofibers Filled with MnO<sub>2</sub> Nanosheets as Efficient Sulfur Hosts for Lithium–Sulfur Batteries

Journal article published in 2015 by Zhen Li, Jintao Zhang ORCID, Xiong Wen (David) Lou
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

Full text: Unavailable

Green circle
Preprint: archiving allowed
Orange circle
Postprint: archiving restricted
Red circle
Published version: archiving forbidden
Data provided by SHERPA/RoMEO

Abstract

Lithium-sulfur batteries have been investigated as promising electrochemical-energy storage systems owing to their high theoretical energy density. Sulfur-based cathodes must not only be highly conductive to enhance the utilization of sulfur, but also effectively confine polysulfides to mitigate their dissolution. A new physical and chemical entrapment strategy is based on a highly efficient sulfur host, namely hollow carbon nanofibers (HCFs) filled with MnO2 nanosheets. Benefiting from both the HCFs and birnessite-type MnO2 nanosheets, the MnO2 @HCF hybrid host not only facilitates electron and ion transfer during the redox reactions, but also efficiently prevents polysulfide dissolution. With a high sulfur content of 71 wt % in the composite and an areal sulfur mass loading of 3.5 mg cm(-2) in the electrode, the MnO2 @HCF/S electrode delivered a specific capacity of 1161 mAh g(-1) (4.1 mAh cm(-2) ) at 0.05 C and maintained a stable cycling performance at 0.5 C over 300 cycles.