1. Solvothermal-assisted assembly of MoS2 nanocages on graphene sheets to enhance the electrochemical performance of lithium-ion battery
- Author
-
Jin Shao, Jian Wu, Ningzhong Bao, Liu Zhenmin, Dafang He, Yi Yang, Liming Shen, and Wang Shun
- Subjects
Nanocomposite ,Materials science ,Nanostructure ,Graphene ,Annealing (metallurgy) ,Nanotechnology ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Electrochemistry ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,Lithium-ion battery ,0104 chemical sciences ,Anode ,law.invention ,Nanocages ,law ,General Materials Science ,Electrical and Electronic Engineering ,0210 nano-technology - Abstract
An ordered hollow MoS2 nanocages/RGO nanocomposite is constructed by a simple solvothermal-assisted assembly method combined with freeze-drying and annealing. In this novel nanostructure, hollow MoS2 nanocages are homogeneously distributed on graphene sheets with a tight bond of C-O-Mo. The nanosized and hollow MoS2 nanocages can effectively accommodate the huge volume change during charge/discharge process and increase the number of electrochemical reaction active sites, accelerating the kinetics of lithiation/delithiation. The tight C-O-Mo bond between graphene and MoS2 further reinforces the structural stability, thus improve the electrical conductivity and substantially enhance the lithium storage performance of MoS2 anode material. As a result, this novel nanocomposite shows a long-cycle stability of 717.4 mAhg−1 after 800 cycles at a high current density of 3 Ag−1, exhibiting great potential as an anode nanocomposite for advanced lithiumion batteries. more...
- Published
- 2020
- Full Text
- View/download PDF