Jump to main content
Jump to site search

Issue 4, 2015
Previous Article Next Article

Exfoliated-SnS2 restacked on graphene as a high-capacity, high-rate, and long-cycle life anode for sodium ion batteries

Author affiliations

Abstract

Designed as a high-capacity, high-rate, and long-cycle life anode for sodium ion batteries, exfoliated-SnS2 restacked on graphene is prepared by the hydrolysis of lithiated SnS2 followed by a facile hydrothermal method. Structural and morphological characterizations demonstrate that ultrasmall SnS2 nanoplates (with a typical size of 20–50 nm) composed of 2–5 layers are homogeneously decorated on the surface of graphene, while the hybrid structure self-assembles into a three-dimensional (3D) network architecture. The obtained SnS2/graphene nanocomposite delivers a remarkable capacity as high as 650 mA h g−1 at a current density of 200 mA g−1. More impressively, the capacity can reach 326 mA h g−1 even at 4000 mA g−1 and remains stable at ∼610 mA h g−1 without fading up to 300 cycles when the rate is brought back to 200 mA g−1. The excellent electrochemical performance is attributed to the synergetic effects between the ultrasmall SnS2 and the highly conductive graphene network. The unique structure can simultaneously facilitate Na+ ion diffusion, provide more reaction sites, and suppress aggregation and volume fluctuation of the active materials during prolonged cycling.

Graphical abstract: Exfoliated-SnS2 restacked on graphene as a high-capacity, high-rate, and long-cycle life anode for sodium ion batteries

Back to tab navigation

Supplementary files

Publication details

The article was received on 03 Sep 2014, accepted on 12 Oct 2014 and first published on 13 Oct 2014


Article type: Paper
DOI: 10.1039/C4NR05106H
Author version
available:
Download author version (PDF)
Nanoscale, 2015,7, 1325-1332

  •   Request permissions

    Exfoliated-SnS2 restacked on graphene as a high-capacity, high-rate, and long-cycle life anode for sodium ion batteries

    Y. Liu, H. Kang, L. Jiao, C. Chen, K. Cao, Y. Wang and H. Yuan, Nanoscale, 2015, 7, 1325
    DOI: 10.1039/C4NR05106H

Search articles by author

Spotlight

Advertisements