Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



A one-pot synthesis of hetero-Co9S8–NiS sheets on graphene to boost lithium–sulfur battery performance

Author affiliations

Abstract

Lithium–sulfur batteries have received extensive attention owing to abundant sulfur resources and high energy density. However, their practical applications are hindered by the low utilization of sulfur due to its poor electronic conductivity, the shuttle effect and the sluggish redox kinetics of soluble lithium polysulfides (LiPSs), thus resulting in severe fading capacity. In study, graphene decorated with hetero-Co9S8–NiS sheets (BMS-G) was employed as a host material to support S in cathodes. The hetero-Co9S8–NiS effectively confined numerous LiPS species by chemisorption, and expedited the redox kinetics of LiPS. Consequently, the cathode with the BMS-G composite delivered high reversible specific capacities of 1142.9 mA h g−1 at 0.2 C and 705.8 mA h g−1 at 2 C, and had an excellent cycling stability (only 0.031% capacity fading per cycle over 800 cycles at 1 C was observed).

Graphical abstract: A one-pot synthesis of hetero-Co9S8–NiS sheets on graphene to boost lithium–sulfur battery performance

Back to tab navigation

Supplementary files

Article information


Submitted
30 Dec 2019
Accepted
26 Mar 2020
First published
03 Apr 2020

Inorg. Chem. Front., 2020, Advance Article
Article type
Research Article

A one-pot synthesis of hetero-Co9S8–NiS sheets on graphene to boost lithium–sulfur battery performance

L. Chen, X. Xie, Z. Zhang, X. Kong, S. Liang and A. Pan, Inorg. Chem. Front., 2020, Advance Article , DOI: 10.1039/C9QI01691K

Social activity

Search articles by author

Spotlight

Advertisements