Issue 26, 2019

Substituting copolymeric poly(alkylenetetrasulfide) for elemental sulfur to diminish the shuttling effect of modified intermediate polysulfides for high-performance lithium–sulfur batteries

Abstract

Poly(alkylenetetrasulfide) can be synthesized to replace sulfur in a chitosan-derived porous carbon (CPC) based composite cathode of lithium–sulfur batteries. Introducing a –CH2– or –CH2CH2– unit in-between the S–S bond of a polysulfide (e.g., Li2S4 → Li–S2–CH2–S–Li or Li–S–CH2CH2–S–Li) diminishes the adverse shuttling effect, proved by experimental tests and first-principle calculations.

Graphical abstract: Substituting copolymeric poly(alkylenetetrasulfide) for elemental sulfur to diminish the shuttling effect of modified intermediate polysulfides for high-performance lithium–sulfur batteries

Supplementary files

Article information

Article type
Communication
Submitted
17 Dec 2018
Accepted
24 Feb 2019
First published
25 Feb 2019

Chem. Commun., 2019,55, 3729-3732

Substituting copolymeric poly(alkylenetetrasulfide) for elemental sulfur to diminish the shuttling effect of modified intermediate polysulfides for high-performance lithium–sulfur batteries

H. Zhou, F. Yu, M. Wei, Y. Su, Y. Ma, D. Wang and Q. Shen, Chem. Commun., 2019, 55, 3729 DOI: 10.1039/C8CC09972C

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