Lithium Storage Properties of Hierarchical MoS<sub>2</sub>/C Composite Materials

化学工业与工程

Chemcial Industry and Engineering

2021, Vol. 38

Issue (3) :70-77 DOI: 10.13353/j.issn.1004.9533.20200808

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Lithium Storage Properties of Hierarchical MoS₂/C Composite Materials

Yang Zichuan, Xiang Jianan, Wang Xiaxia, Tian Jianhua, Shan Zhongqiang

School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China

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Abstract Flower-like MoS₂/C composite materials were prepared by one-pot ethanol/water composite solvothermal and postsintering method using MoS₂ and glucose as raw materials. The reasonable composition of the ethanol/water composite solvent and the reasonable carbon content in the MoS₂/C composite material were investigated. The morphology of MoS₂/C samples were characterized using SEM and TEM. The carbon content of MoS₂/C materials was tested and calculated using TGA. The electrochemical properties of the MoS₂/C electrodes were investigated by cyclic voltammetry, galvanostatic charge-discharge measurements and electrochemical impedance spectroscopy. The result indicated that MoS₂/C composite materials exhibits hierarchical flower-like structure, which eases the agglomeration of MoS₂ and increases the utilization and electrochemical stability of the electrode active materials. When V_ethanol：V_water=1：2 and the carbon content is 50%,the MoS₂/C electrode delivers a reversible capacity of 762 mA·h·g^-1 at a current density of 200 mA·g^-1 after 100 cycles.

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	Yang Zichuan
	Xiang Jianan
	Wang Xiaxia
	Tian Jianhua
	Shan Zhongqiang

Keywords： lithium ion batteries； negative electrode materials； molybdenum disulfide； hierarchical； glucose

Received 2020-08-06;

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Yang Zichuan, Xiang Jianan, Wang Xiaxia, Tian Jianhua, Shan Zhongqiang.Lithium Storage Properties of Hierarchical MoS₂/C Composite Materials[J] Chemcial Industry and Engineering, 2021,V38(3): 70-77

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