Issue 45, 2014

A novel SnS2@graphene nanocable network for high-performance lithium storage

Abstract

A unique SnS2@graphene nanocable structure with a novel contact model between SnS2 nanosheets and graphene has been successfully fabricated, in which the graphene layers are rolled up to encapsulate the SnS2 nanosheets, forming a mechanically robust, free-standing SnS2@graphene nanocable network. This distinctive structure provides an effective architecture as an electrode in lithium ion batteries to effectively accommodate the volume change of SnS2 during the charge–discharge cycling, facilitates the easy access of electrolyte to the active electrode materials, and also offers a continuous conductive network for the whole electrode. Interestingly, this binder-free electrode not only shows high specific capacity and excellent cycling performance with a specific capacity of 720 mA h g−1 even after 350 cycles at a current density of 0.2 A g−1 and over 93.5% capacity retention, but exhibits a high-rate capability of 580 mA h g−1 at a current rate of 1 A g−1

Graphical abstract: A novel SnS2@graphene nanocable network for high-performance lithium storage

Supplementary files

Article information

Article type
Paper
Submitted
05 Eph 2014
Accepted
12 Mey 2014
First published
12 Mey 2014

RSC Adv., 2014,4, 23372-23376

Author version available

A novel SnS2@graphene nanocable network for high-performance lithium storage

D. Kong, H. He, Q. Song, B. Wang, Q. Yang and L. Zhi, RSC Adv., 2014, 4, 23372 DOI: 10.1039/C4RA03052D

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