Synthesis of MoTe2 carbon cloth self-supporting flexible electrodes and performance study of lithium-sulphur batteries

Abstract

Lithium-sulphur batteries, which has been studied by scientist for two decades, has high theoretical specific capacity of 1675mAh·g-1, and high theoretical energy density of 2600Wh·kg-1. However, the downside of lithium-sulphur batteries seriously limited the development of the lithium-sulphur batteries in last two decades. That is mainly because elemental sulfur and lithium sulfide has low conductivity, shuttle effect of lithium-sulphur batteries, and the sulfur anode volume change during the charging and discharging processes. Therefore, it is crucial to create a new cathode material that could release the problems above. Herein, in this paper we reported a MoTe2/CC material by pretreatment of the carbon cloth and synthesis the MoTe2 compound onto the carbon fiber. The SEM photo shows the MoTe2/CC material was well synthesized, and the new Lithium-sulphur battery we prepared in the lab shows extreme high electrochemical properties from electrochemical workstation test. Therefore, the MoTe2/CC material is a fantasist solution for the new lithium-sulphur batteries, and this material can be extended to apply for many different electrodes.