Synthesis and characterization of three-dimensional MoS2@carbon fibers hierarchical architecture with high capacity and high mass loading for Li-ion batteries

Xinyuan Shan; Shen Zhang; Na Zhang; Yujin Chen; Hong Gao; Xitian Zhang

doi:10.1016/j.jcis.2017.09.078

Synthesis and characterization of three-dimensional MoS₂@carbon fibers hierarchical architecture with high capacity and high mass loading for Li-ion batteries

J Colloid Interface Sci. 2018 Jan 15:510:327-333. doi: 10.1016/j.jcis.2017.09.078. Epub 2017 Sep 21.

Authors

Xinyuan Shan¹, Shen Zhang², Na Zhang³, Yujin Chen², Hong Gao¹, Xitian Zhang⁴

Affiliations

¹ Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, PR China.
² Key Laboratory of In-Fiber Intregrated Optics, Ministry of Education, and College of Science, Harbin Engineering University, Harbin 150001, PR China.
³ Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, United States.
⁴ Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, PR China. Electronic address: xtzhangzhang@hotmail.com.

PMID: 28957749
DOI: 10.1016/j.jcis.2017.09.078

Abstract

Three-dimensional (3D) MoS₂@carbon fibers (CFs) hierarchical architectures are successfully synthesized via a simple hydrothermal method and subsequent annealing. MoS₂ nanoflakes are grown on the twine carbon fibers of the carbonized waste cotton cloth. The twine CFs can provide a short diffusion path for ions in electrolyte, enhance the specific surface area, and improve the conductivity of the 3D MoS₂@CFs hierarchical architectures with high mass loading of 4.4mgcm^-2. The 3D MoS₂@CFs hierarchical architectures as the electrode material can achieve a high reversible areal capacity (5.2mAhcm^-2 at 2.5mAcm^-2) and exhibit an excellent rate performance. In addition, CFs are prepared by simply carbonizing the waste cotton and then used as carbon source, which is low-cost and eco-friendly. We also found that the Mo nanoparticles produced during the charge/discharge process exist in the hierarchical architectures during cycling and can improve the conductivity of the entire system as well as the cycling stability. Therefore, MoS₂@CFs nanocomposites as electrode materials manifest a significant application potential for high-performance Li-ion batteries.

Keywords: Electrochemical performance; Li-ion batteries; MoS(2); Three-dimensional hierarchical architectures.