Preparation and Lithium Storage Properties of Hierarchical Hydrangea-Like MoS2/C Composites

In this article, hierarchical hydrangea-like MoS2/C composites are synthesized through a simple one-pot solvothermal method followed by heat treatment for the first time. The morphology and electrochemical performance of MoS2/C are largely affected by the solvent composition and carbon content during the solvothermal process. The interlayer distance of few-layer MoS2 is increased by the insertion of carbon layer for the unique hierarchical hydrangea-like MoS2/C nanostructure. The cycling performance of MoS2/C is greatly improved because it takes advantage of both good conductivity and structural stability. When tested as an anode of a lithium-ion battery, the results show that the reversible specific capacity of the MoS2/C electrode is 853.1 mAh g(-1) after 80 cycles at a current density of 200 mA g(-1) with capacity retention of 98.4%. Especially, when tested under 500 mA g(-1), the reversible specific capacity can reach to 780.6 mAh g(-1) after 200 cycles.

Automated summary

Hierarchical hydrangea-like MoS2/C composites were synthesized through one-pot solvothermal method and heat treatment. The solvent composition and carbon content greatly influenced the morphology and electrochemical performance of MoS2/C. The insertion of carbon layer increased the interlayer distance of few-layer MoS2, forming a unique hierarchical structure. The cycling performance of MoS2/C improved significantly due to its good conductivity and structural stability.