Hierarchical WSe2 nanoflower as a cathode material for rechargeable Mg-ion batteries

Jing Xu; Zhengnan Wei; Shaokang Zhang; Xuanxuan Wang; Yihan Wang; Mengyuan He; Kejing Huang

doi:10.1016/j.jcis.2020.12.083

Hierarchical WSe₂ nanoflower as a cathode material for rechargeable Mg-ion batteries

J Colloid Interface Sci. 2021 Apr 15:588:378-383. doi: 10.1016/j.jcis.2020.12.083. Epub 2020 Dec 28.

Authors

Jing Xu¹, Zhengnan Wei², Shaokang Zhang³, Xuanxuan Wang³, Yihan Wang³, Mengyuan He³, Kejing Huang⁴

Affiliations

¹ College of Chemistry and Chemical Engineering, Xinyang Normal University,Xinyang 464000, PR China. Electronic address: xujing@xynu.edu.cn.
² Postdoctor Scientific Research Station of Shengli Petroleun Administration, SINOPEC, Dongying 257000, PR China.
³ College of Chemistry and Chemical Engineering, Xinyang Normal University,Xinyang 464000, PR China.
⁴ College of Chemistry and Chemical Engineering, Xinyang Normal University,Xinyang 464000, PR China. Electronic address: kejinghuang@163.com.

PMID: 33422786
DOI: 10.1016/j.jcis.2020.12.083

Abstract

Transition metal dichalcogenides (TMDs) have emerged as a promising material in the energy field due to their unique structural arrangement. In this work, ordered flower-like WSe₂ nanosheet was synthesized through simple one-step hydrothermal method, and its cathode application for rechargeable Mg-ion batteries was assessed. The WSe₂ cathode exhibits a high reversible capacity above 265 mAh g^-1 at 50 mA g^-1, excellent cycling life of 90% initial capacitance that can be ceaselessly harvested for 100 cycles at 50 mA g^-1, and superior rate capability of 70% initial capacitance maintained even at the current density of 500 mA g^-1. This work paves the way for the application of WSe₂ cathode in Mg-ion and other rechargeable batteries.

Keywords: Cathode material; Electrochemical characteristic; Mg-ion batteries.