Carbon-Tungsten Disulfide Composite Bilayer Separator for High-Performance Lithium-Sulfur Batteries

Shamshad Ali; Muhammad Waqas; Xiaopeng Jing; Ning Chen; Dongjiang Chen; Jie Xiong; Weidong He

doi:10.1021/acsami.8b12682

Carbon-Tungsten Disulfide Composite Bilayer Separator for High-Performance Lithium-Sulfur Batteries

ACS Appl Mater Interfaces. 2018 Nov 21;10(46):39417-39421. doi: 10.1021/acsami.8b12682. Epub 2018 Nov 6.

Authors

Shamshad Ali, Muhammad Waqas¹, Xiaopeng Jing, Ning Chen, Dongjiang Chen, Jie Xiong, Weidong He

Affiliation

¹ Department of Electrical Engineering , Sukkur IBA University , Sukkur 65200 , Pakistan.

PMID: 30387589
DOI: 10.1021/acsami.8b12682

Abstract

A bilayer separator based on cost-effective carbon-tungsten disulfide composite and commercial separators is developed in this work. The C-WS₂ separator reduces the shuttling effect and increases the cycle life of the battery because of the excellent adsorption capability of polar WS₂ to polysulfides. Furthermore, conductive carbon substantially enhances the ionic conductivity of (1 × 10^-3 S cm^-1). The cell with the C-WS₂ separator delivers an excellent discharge capacity of 996 mA h g^-1 at 1 C and retained at 416 mA h g^-1 after runs over 1000 cycles with a 0.045% capacity decay per cycle. The work provides insights into high-capacity lithium-sulfur batteries with cost-effectiveness.

Keywords: bilayer separator; carbon−tungsten disulfide composite; cost-effectiveness; high-capacity; lithium−sulfur battery; polysulfide adsorption.