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.


Issue 2, 2014
Previous Article Next Article

Facile synthesis of Li2S–polypyrrole composite structures for high-performance Li2S cathodes

Author affiliations

Abstract

Li2S is an attractive prelithiated cathode material with a high theoretical capacity of 1166 mA h g−1, which is far above that of its transition metal oxide/phosphate counterparts. Here, we demonstrate facile, in situ synthesis of Li2S–polypyrrole composites for use as high-performance Li2S cathodes. The N atoms in polypyrrole were found to possess favorable Li–N interaction with Li2S, which enables polypyrrole to bind strongly onto and cover the surface of Li2S to constrain intermediate polysulfides during cycling. Polypyrrole, being a conducting polymer, also helps to facilitate electronic conduction. Using the Li2S–polypyrrole composites as a cathode material, we demonstrate a high discharge capacity of 785 mA h g−1 of Li2S (∼1126 mA h g−1 of S) with stable cycling over prolonged 400 charge/discharge cycles.

Graphical abstract: Facile synthesis of Li2S–polypyrrole composite structures for high-performance Li2S cathodes

Back to tab navigation

Supplementary files

Article information


Submitted
12 Oct 2013
Accepted
29 Nov 2013
First published
02 Dec 2013

Energy Environ. Sci., 2014,7, 672-676
Article type
Communication

Facile synthesis of Li2S–polypyrrole composite structures for high-performance Li2S cathodes

Z. W. Seh, H. Wang, P. Hsu, Q. Zhang, W. Li, G. Zheng, H. Yao and Y. Cui, Energy Environ. Sci., 2014, 7, 672
DOI: 10.1039/C3EE43395A

Social activity

Search articles by author

Spotlight

Advertisements