Jump to main content
Jump to site search

Issue 18, 2016
Previous Article Next Article

W18O49 nanowire composites as novel barrier layers for Li–S batteries based on high loading of commercial micro-sized sulfur

Author affiliations

Abstract

Li–S batteries are regarded as one of the most promising energy-storage devices due to their high theoretical energy density, five times higher than that of lithium-ion batteries (2600 vs. ∼500 W h kg−1). However, the polysulfide shuttle effect is the primary challenge for future applications of Li–S batteries. Herein, a novel barrier layer material, nonstoichiometric W18O49 nanowires, is reported to alleviate the undesirable shuttle effect, thereby largely boosting the specific capacity and cyclability of Li–S batteries. Without particular cathode design, the introduction of W18O49 nanowires enables the commercially available micro-sized sulfur cathode with 70% sulfur loading to deliver a respectable initial discharge capacity of 1142 mA h g−1 and retain a specific capacity of about 809 mA h g−1 after 50 cycles, even at a current density of 0.5 A g−1. To the best of our knowledge, such a capacity fading for Li–S batteries based on high loading of commercial micro-sized sulfur has been rarely reported.

Graphical abstract: W18O49 nanowire composites as novel barrier layers for Li–S batteries based on high loading of commercial micro-sized sulfur

Back to tab navigation

Supplementary files

Article information


Submitted
24 Dec 2015
Accepted
29 Jan 2016
First published
29 Jan 2016

RSC Adv., 2016,6, 15234-15239
Article type
Paper

W18O49 nanowire composites as novel barrier layers for Li–S batteries based on high loading of commercial micro-sized sulfur

W. Zhang, C. Lin, S. Cong, J. Hou, B. Liu, F. Geng, J. Jin, M. Wu and Z. Zhao, RSC Adv., 2016, 6, 15234
DOI: 10.1039/C5RA27635G

Social activity

Search articles by author

Spotlight

Advertisements