High sulfur-containing carbon polysulfide polymer as a novel cathode material for lithium-sulfur battery.

Abstract:

:The lithium-sulfur battery, which offers a high energy density and is environmental friendly, is a promising next generation of rechargeable energy storage system. However, despite these attractive attributes, the commercialization of lithium-sulfur battery is primarily hindered by the parasitic reactions between the Li metal anode and dissolved polysulfide species from the cathode during the cycling process. Herein, we synthesize the sulfur-rich carbon polysulfide polymer and demonstrate that it is a promising cathode material for high performance lithium-sulfur battery. The electrochemical studies reveal that the carbon polysulfide polymer exhibits superb reversibility and cycle stability. This is due to that the well-designed structure of the carbon polysulfide polymer has several advantages, especially, the strong chemical interaction between sulfur and the carbon framework (C-S bonds) inhibits the shuttle effect and the π electrons of the carbon polysulfide compound enhance the transfer of electrons and Li+. Furthermore, as-prepared carbon polysulfide polymer-graphene hybrid cathode achieves outstanding cycle stability and relatively high capacity. This work highlights the potential promise of the carbon polysulfide polymer as the cathode material for high performance lithium-sulfur battery.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Zhang Y,Peng Y,Wang Y,Li J,Li H,Zeng J,Wang J,Hwang BJ,Zhao J

doi

10.1038/s41598-017-11922-6

subject

Has Abstract

pub_date

2017-09-12 00:00:00

pages

11386

issue

1

issn

2045-2322

pii

10.1038/s41598-017-11922-6

journal_volume

7

pub_type

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