The synthesis, characterization and electrochemical study of γ-MnS/rGO nanocomposites are described in this work. A one-pot hydro-thermal method is employed to fabricate γ-MnS/rGO electrodes. l-cysteine is used as sulfur source as well as the reduction of GO to rGO. The resulting materials are characterized by XRD, SEM, TEM, FT-IR and TG. Γ-MnS particles dispersing on the surface of reduced graphene oxide have the average diameter of ca. 37nm. As a splendid anode material for lithium-ion batteries, γ-MnS/rGO nanocomposites achieve a stable specific capacity of ca. 600mAh/g at a current density of 200mA/g for 100cycles and deliver a great rate performance (a reversible capacity of ca. 320mAh/g even at a high current density of 1000mA/g). All of these electrochemical performances are greater than those of the pristine MnS.
Solid State Ionics – Elsevier
Published: Oct 1, 2015
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