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High-Performance Capacitors Based on MoS2 Nanosheets Supported on Carbon Fibers

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MoS2 nanosheets are grown on the surface of carbon fibers by a facile one-step hydrothermal method, forming a core–shell nanocomposite, as manifested in scanning/transmission electron microscopy, Raman scattering, and X-ray diffraction measurements. Electrochemical studies show that the core–shell nanocomposites exhibit enhanced capacitance performance in comparison with MoS2 nanoparticles or bare carbon fibers alone, with a specific capacitance as high as 474.4 F/g at the current density of 1 A/g in 1 M Na2SO4 aqueous electrolyte and excellent long-term cycle stability with only 3.1% loss of the capacitance after 3,000 charge/discharge cycles. This is accounted for by the large effective surface area of the MoS2 nanosheets as well as good electronic conductivity of the nanocomposites.
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Keywords: CARBON FIBER; CORE–SHELL NANOCOMPOSITE; HYDROTHERMAL; MOS2 NANOSHEET; SUPERCAPACITOR

Document Type: Research Article

Publication date: 2015-11-01

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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