Coaxial MoS(2)@Carbon Hybrid Fibers: A Low-Cost Anode Material for High-Performance Li-Ion Batteries

A low-cost bio-mass-derived carbon substrate has been employed to synthesize MoS(2)@carbon composites through a hydrothermal method. Carbon fibers derived from natural cotton provide a three-dimensional and open framework for the uniform growth of MoS(2) nanosheets, thus hierarchically constructing coaxial architecture. The unique structure could synergistically benefit fast Li-ion and electron transport from the conductive carbon scaffold and porous MoS(2) nanostructures. As a result, the MoS(2)@carbon composites—when serving as anodes for Li-ion batteries—exhibit a high reversible specific capacity of 820 mAh·g(−1), high-rate capability (457 mAh·g(−1) at 2 A·g(−1)), and excellent cycling stability. The use of bio-mass-derived carbon makes the MoS(2)@carbon composites low-cost and promising anode materials for high-performance Li-ion batteries.