• 文献标题:   Construction of MoS2@reduced graphene oxide/carbon nanotubes three-dimensional network structure and its application in lithium- sulfur batteries
  • 文献类型:   Article
  • 作  者:   HUANG Y, CHEN Y, SONG X, LIU Q, LU X, JIANG Q
  • 作者关键词:   lithiumsulfur batterie, cathode material, mos2@rgo, cnts 3d network structure, electrochemical performance
  • 出版物名称:   MATERIALS TODAY CHEMISTRY
  • ISSN:   2468-5194
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:   10.1016/j.mtchem.2023.101592 EA MAY 2023
  • 出版年:   2023

▎ 摘  要

In order to enhance the electrochemical performance of lithium-sulfur batteries, reduced graphene oxide (rGO), and carbon nanotubes (CNTs) were used to construct a conductive and mechanical skeleton of the overall electrode composite. And molybdenum disulfide (MoS2) grew on the skeleton in situ. Thus, a composite MoS2@rGO/CNTs with a three-dimensional (3D) network structure was constructed. A series of corresponding structural characterizations and electrochemical performance tests were carried out. And the results showed that the 3D porous skeleton composed of rGO and CNTs could act as a 3D conductive network, which not only significantly improved the conductivity and structural stability of the cathode material for lithium-sulfur batteries but also provided a large number of active sites for the active substance S. MoS2 had a strong chemisorption effect on lithium polysulfides, which could effec-tively hinder their shuttle behavior. So, the MoS2@/CNTs/rGO/S cathode material showed good electro-chemical performance. Its first discharge specific capacity was up to 1417.8 mAh/g at 0.1 C. After 200 cycles at 0.5 C, its capacity decay rate per cycle was only 0.09%. Its discharge capacity could still maintain at 803.2 mAh/g at 3 C, showing a good application prospect.& COPY; 2023 Elsevier Ltd. All rights reserved.