Abstract
A low-cost bio-mass-derived carbon substrate has been employed to synthesize MoS2@carbon composites through a hydrothermal method. Carbon fibers derived from natural cotton provide a three-dimensional and open framework for the uniform growth of MoS2 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 MoS2 nanostructures. As a result, the MoS2@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 MoS2@carbon composites low-cost and promising anode materials for high-performance Li-ion batteries.
Highlights
The worsening environmental problems and energy crisis have accelerated the development of electric vehicles and portable electronics, which forward an ever-growing demand for lithium-ion batteries (LIBs) with high energy density and excellent rate capability [1,2]
We report the use of a bio-mass-derived carbon substrate from low-cost natural cotton for subsequent growth of MoS2 nanosheets
It is clearly revealed that the two distinct peaks at around 374 and 406 cm−1 can be ascribed to the in-plane E1 2g and out-of-plane A1g modes of the hexagonal MoS2 crystal, respectively [29,30]
Summary
The worsening environmental problems and energy crisis have accelerated the development of electric vehicles and portable electronics, which forward an ever-growing demand for lithium-ion batteries (LIBs) with high energy density and excellent rate capability [1,2]. Among the LIB components, the commercial anode material of graphite suffers from low theoretical specific capacity (i.e., 372 mAh·g−1 ), slow reaction kinetics, and possible safety issues resulting from its low discharge voltage (
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