Tucked flower-like SnS2/Co3O4 composite for high-performance anode material in lithium-ion batteries

Authors

Yanfei Zhu, South China Normal University, Guangdong Engineering Technology Research Center of Low Carbon and Advanced Energy Materials
Yinghong Chu, South China Normal University
Jinghao Liang, South China Normal University
Yunsha Li, South China Normal University
Zilin Yuan, Chongqing University
Wentao Li, South China Normal University
Yiqiong Zhang, South China Normal University, Guangdong Engineering Technology Research Center of Low Carbon and Advanced Energy Materials
Xuexue Pan, South China Normal University
Shulei Chou, University of WollongongFollow
Lingzhi Zhao, South China Normal University, Guangdong Engineering Technology Research Center of Low Carbon and Advanced Energy Materials
Ronghua Zeng, South China Normal University, Guangdong Engineering Technology Research Center of Low Carbon and Advanced Energy MaterialsFollow

RIS ID

105141

Publication Details

Zhu, Y., Chu, Y., Liang, J., Li, Y., Yuan, Z., Li, W., Zhang, Y., Pan, X., Chou, S., Zhao, L. & Zeng, R. (2016). Tucked flower-like SnS2/Co3O4 composite for high-performance anode material in lithium-ion batteries. Electrochimica Acta, 190 843-851.

Abstract

A novel tucked flower-like SnS2/Co3O4 structure is synthesized by growing Co3O4 in the gaps between petals of SnS2 microflowers through a facile solution method. In our strategy, the petals of the flowers are curled inwards due to the swelling force resulting from growth of Co3O4, resulting in the encapsulation of Co3O4 with the SnS2 petals forming a coating structure. The SnS2/Co3O4 composite displays greatly improved performance in comparison with pure SnS2. After 100 cycles, an outstanding reversible capacity of ∼715 mAh g-1 with negligible capacity fading is achieved at current density of 100 mA g-1 for SnS2/Co3O4. What is more, the SnS2/Co3O4 exhibits excellent rate capability, and a reversible capacity of up to ∼530 mAh g-1 is obtained, even at a current density as high as 1000 mA g-1. The morphology of tucked flower-like petals and the introduction of the secondary structure of Co3O4 are suggested to be responsible for the improved lithium storage capacity of the composite. The as-prepared SnS2/Co3O4 shows promise as a potential anode material for Li-ion batteries due to its simple synthesis method and large capacity.