Issue 23, 2014

Covalent-organic frameworks: potential host materials for sulfur impregnation in lithium–sulfur batteries

Abstract

Commercial development of lithium–sulfur (Li–S) batteries is severely hindered by their insufficient cyclability, which is due to the loss of soluble lithium polysulfide intermediates generated during the discharge processes. To overcome this problem, considerable efforts have been devoted to designing novel micro- or nano-structured host materials, aiming to trap soluble polysulfide within the network. Herein, we report a new approach to construct a sulfur electrode by impregnating sulfur into the nanopores of covalent-organic frameworks (COFs). Our results clearly demonstrate that by using a 2D COF as a host material, e.g. CTF-1 (CTF: covalent triazine-based framework), the thus-prepared cathode can show a remarkable positive effect on the capacity retention of Li–S batteries. Considering the unique features of COFs, such as highly flexible molecular design and a controllable pore size, this proof-of-principle study provides new opportunities for materials scientists for tailoring cathode materials in Li–S batteries.

Graphical abstract: Covalent-organic frameworks: potential host materials for sulfur impregnation in lithium–sulfur batteries

Supplementary files

Article information

Article type
Paper
Submitted
29 Jan 2014
Accepted
08 Mar 2014
First published
10 Mar 2014

J. Mater. Chem. A, 2014,2, 8854-8858

Author version available

Covalent-organic frameworks: potential host materials for sulfur impregnation in lithium–sulfur batteries

H. Liao, H. Ding, B. Li, X. Ai and C. Wang, J. Mater. Chem. A, 2014, 2, 8854 DOI: 10.1039/C4TA00523F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements