A nitrogen and sulfur dual-doped carbon derived from polyrhodanine@cellulose for advanced lithium-sulfur batteries

Quan Pang; Juntao Tang; He Huang; Xiao Liang; Connor Hart; Kam C Tam; Linda F Nazar

doi:10.1002/adma.201502467

A nitrogen and sulfur dual-doped carbon derived from polyrhodanine@cellulose for advanced lithium-sulfur batteries

Adv Mater. 2015 Oct 21;27(39):6021-8. doi: 10.1002/adma.201502467. Epub 2015 Aug 28.

Authors

Quan Pang¹, Juntao Tang², He Huang¹, Xiao Liang¹, Connor Hart¹, Kam C Tam², Linda F Nazar¹

Affiliations

¹ Department of Chemistry and the Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada.
² Department of Chemical Engineering and the Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada.

PMID: 26314378
DOI: 10.1002/adma.201502467

Abstract

A sulfur electrode exhibiting strong polysulfide chemisorption using a porous N, S dual-doped carbon is reported. The synergistic functionalization from the N and S heteroatoms dramatically modifies the electron density distribution and leads to much stronger polysulfide binding. X-ray photoelectron spectroscopy studies combined with ab initio calculations reveal strong Li(+) -N and Sn (2-) -S interactions. The sulfur electrodes exhibit an ultralow capacity fading of 0.052% per cycle over 1100 cycles.

Keywords: biosustainable materials; chemisorptions; dual-doped carbon; lithium-sulfur batteries; polysulfide binding.