Chinese hydrangea lantern-like Co9S8@MoS2 composites with enhanced lithium-ion battery properties.

Affiliation

Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, PR China. [Email]

Abstract

Chinese hydrangea lantern-like Co9S8@MoS2 composites are prepared by a facile solvothermal method. Ultra-thin MoS2 nanosheets as the shells grow tightly and uniformly on the surface of the Co9S8 core. Due to their unique hierarchical core-shell structure and novel morphology, the composites show excellent electrochemical performance as the anode materials of lithium-ion batteries. They can deliver reversible discharge capacities of around 1298, 1150, 1089, 1018 and 941 mA h g-1 at the current densities of 0.1, 0.5, 1, 1.5 and 2.0 A g-1, respectively. Moreover, the Co9S8@MoS2 composites can still maintain a discharge capacity of 1048 mA h g-1 after 300 cycles at a current density of 1.0 A g-1.

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