20November2018

Nano-Micro Letters

Improved Electrochemical Performance Based on Nanostructured SnS2@CoS2-rGO Composite Anode for Sodium-Ion Batteries

Xia Wang1,*, Xueying Li1, Qiang Li1, Hongsen Li1, Jie Xu1, Hong Wang1, Guoxia Zhao1, Lisha Lu1, Xiaoyu Lin1, Hongliang Li2, Shandong Li1,*

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Nano-Micro Lett. (2018) 10: 46

First Online: 2 April 2018 (Article)

DOI:10.1007/s40820-018-0200-x

*Corresponding author. E-mail: lishd@qdu.edu.cn ; wangxiakuaile@qdu.edu.cn

 

Abstract

 


Toc

A promising anode material composed of SnS2@CoS2 flower-like spheres assembled from SnS2 nanosheets and CoS2 nanoparticles accompanied by reduced graphene oxide (rGO) was fabricated by a facile hydrothermal pathway. The presence of rGO and the combined merits of SnS2 and CoS2 endow the SnS2@CoS2-rGO composite with high conductivity pathways and channels for electrons and with excellent properties as an anode material for sodium-ion batteries (SIBs). A high capacity of 514.0 mAh g−1 at a current density of 200 mA g-1 after 100 cycles and a good rate capability can be delivered. The defined structure and good sodium-storage performance of the SnS2@CoS2-rGO composite demonstrate its promising application in high-performance sodium-ion batteries (SIBs).


 

Keywords

SnS2 nanosheets; CoS2 nanoparticles; Reduced graphene oxide (rGO); Sodium-ion batteries (SIBs)

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