Synthesis of hierarchical MoS2 microspheres composed of nanosheets assembled via facile hydrothermal method as anode material for lithium-ion batteries

Abstract

A hierarchical MoS 2 architecture composed of nanosheet-assembled microspheres with an expanded interplanar spacing of the (002) planes was successfully prepared via a simple hydrothermal reaction. Electron microscopy studies revealed formation of the MoS 2 microspheres with an average diameter of 230 nm. It was shown that the hierarchical structure of MoS 2 microspheres possesses both the merits of nanometer-sized building blocks and micrometer-sized assemblies, which offer high surface area for fast kinetics and buffers the volume expansion during lithium insertion/deinsertion, respectively. The micrometer-sized assemblies were found to contribute to the enhanced electrochemical stabilities of the electrode materials. The mentioned advantages of the MoS 2 electrode prepared in this work allowed enhanced cyclability and high rate capability of the material. Along with this, the material delivered a high initial discharge capacity of 1206 mAh g -1 and a reversible discharge capacity of 653 mAh g -1 after 100 cycles at a current density of 100 mA g -1 . Furthermore, the material delivered a high reversible capacity of 480 mAh g -1 at a high current density of 1000 mA g -1 .

Chemical Dealloying Synthesis of CuS Nanowire-on-Nanoplate Network as Anode Materials for Li-Ion Batteries

“…With the fast development of electronic devices, lithium ion batteries (LIBs) that adopt commercial graphite anodes have not satisfied the increasing demand for large capacity and high energy density because the capacity of graphite is only 372 mAh•g −1 [1,2]. Therefore, investigating larger specific capacity alternative anode materials has brought great interest [3,4].…”

Synthesis of the ZnO@ZnS Nanorod for Lithium-Ion Batteries

“…However, the theoretical specific capacity of graphite is 372 mAh g −1 , which cannot meet the practical requirements in high-energy density applications. Therefore, it is of great importance to synthesize new anode active materials to improve the electrochemical performance of LIBs [1][2][3][4][5][6].…”

High Electrochemical Performance of Nanotube Structured ZnS as Anode Material for Lithium–Ion Batteries

“…In order to meet energy storage needs, it is necessary to exploit new types of anode materials to replace carbon materials. Metal sulfides—such as CuS, MoS 2 , NiS, and ZnS—also have been used as anodic electrode materials in lithium-ion batteries [ 5 , 6 , 7 , 8 ]. For example, CuS/graphene composite have a good charge–discharge cycling performance; however, its initial discharge capacity was only 627 mAh/g [ 9 ].…”