Abstract
A facile polyquaternium-assisted hydrothermal and postannealing strategy was successfully developed to fabricate graphene-like MoS2/graphene hybrid (GL-MoS2/GR) by anchoring few-layered and expanded MoS2 nanosheets onto flexible and highly-conductive graphene. The resultant hybrid was characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM) and Raman spectroscopy. Experimental results indicated that the MoS2 nanosheets with few-layered features (2–5 layers) and expanded interlayer space were well dipersed and anchored on the graphene to form hybrid. As a consequence, the obtained GL-MoS2/GR electrode exhibited superior electrochemical sodium-storage performances such as high reversible specific capacity, excellent cyclic stability and significantly enhanced rate capability. The prominent electrochemical performance could be attributed to the robust hybrid architectures composed of few-layered and expanded MoS2 nanosheets and conductive graphene as well as the resultant positive synergistic effect between them.
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