Supramolecule-mediated synthesis of MoS2/reduced graphene oxide composites with enhanced electrochemical performance for reversible lithium storage

MoS2/reduced graphene oxide (MoS2/rGO) composites are fabricated through a facile supramolecule-mediated hydrothermal route. The effects of the supramolecule (pillar[ 5] arene) on the microstructure and electrochemical lithium storage performance of the MoS2/rGO composites are investigated. It is found that the MoS2/rGO composites display a wrinkled thin flaky appearance, in which there are a lot of irregular pores and apertures. Few-layer MoS2 sheets are well dispersed and anchored on the rGO surface. When evaluated as a host material for lithium storage, the MoS2/rGO composite exhibits a much higher specific capacity of 1050-1140 mA h g(-1) with excellent cyclic performance and a significantly enhanced high-rate capability of 815-875 mA h g(-1) at a current density of 1000 mA g(-1) in comparison with the pristine MoS2. The improved performance can be ascribed to the robust composite structure and the better synergic effects between few-layer MoS2 and rGO sheets.