Issue 17, 2011

Sandwich-type functionalized graphene sheet-sulfur nanocomposite for rechargeable lithium batteries

Abstract

A functionalized graphene sheet-sulfur (FGSS) nanocomposite was synthesized as the cathode material for lithium–sulfur batteries. The structure has a layer of functionalized graphene sheets/stacks (FGS) and a layer of sulfur nanoparticles creating a three-dimensional sandwich-type architecture. This unique FGSS nanoscale layered composite has a high loading (70 wt%) of active material (S), a high tap density of ∼0.92 g cm−3, and a reversible capacity of ∼505 mAh g−1 (∼464 mAh cm−3) at a current density of 1680 mA g−1 (1C). When coated with a thin layer of cation exchange Nafion film, the migration of dissolved polysulfide anions from the FGSS nanocomposite was effectively reduced, leading to a good cycling stability of 75% capacity retention over 100 cycles. This sandwich-structured composite conceptually provides a new strategy for designing electrodes in energy storage applications.

Graphical abstract: Sandwich-type functionalized graphene sheet-sulfur nanocomposite for rechargeable lithium batteries

Supplementary files

Article information

Article type
Paper
Submitted
10 Nov 2010
Accepted
08 Mar 2011
First published
30 Mar 2011

Phys. Chem. Chem. Phys., 2011,13, 7660-7665

Sandwich-type functionalized graphene sheet-sulfur nanocomposite for rechargeable lithium batteries

Y. Cao, X. Li, I. A. Aksay, J. Lemmon, Z. Nie, Z. Yang and J. Liu, Phys. Chem. Chem. Phys., 2011, 13, 7660 DOI: 10.1039/C0CP02477E

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