1T-Phase MoS2 with large layer spacing supported on carbon cloth for high-performance Na+ storage

Li-Na Wang; Xu Wu; Fu-Ting Wang; Xue Chen; Jing Xu; Ke-Jing Huang

doi:10.1016/j.jcis.2020.09.055

1T-Phase MoS₂ with large layer spacing supported on carbon cloth for high-performance Na⁺ storage

J Colloid Interface Sci. 2021 Feb 1:583:579-585. doi: 10.1016/j.jcis.2020.09.055. Epub 2020 Sep 23.

Authors

Li-Na Wang¹, Xu Wu², Fu-Ting Wang¹, Xue Chen¹, Jing Xu¹, Ke-Jing Huang³

Affiliations

¹ College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China.
² College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China.
³ College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China. Electronic address: kejinghuang@163.com.

PMID: 33038607
DOI: 10.1016/j.jcis.2020.09.055

Abstract

The design and construction of advanced electrode materials is important to the development of high-performance electrochemical energy storage devices. In this paper, V-doped 1T MoS₂ nanosheets with a large layer spacing are grown on carbon cloth (CC) via a one-step hydrothermal method. The resulting material features abundant edge sites and active centers, and its large layer spacing facilitates the interlayer shuttle of Na⁺. Doping with V buffers the volume change and maintains the integrity of MoS₂. The layered structure of the composite featuring CC as a conductive substrate effectively prevents the agglomeration of MoS₂ during the electrochemical process. When used as an anode material for a Na⁺ battery, the material displays a high first-cycle irreversible discharge specific capacity of 1234.9 mAh g^-1. A specific capacity of 453.2 mAh g^-1 is obtained after 100 cycles at a current density of 200 mA g^-1. This work provides an effective and eco-friendly route toward obtaining superior MoS₂ electrodes for high-performance Na⁺ storage.

Keywords: 1T molybdenum disulfide; Anode material; Large layer spacing; Sodium-ion battery.