Synthesis of N-doped graphene/SnS composite and its electrochemical properties for lithium ion batteries |
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Authors: | Shou-Chao Zhu Hua-Chao Tao Xue-Lin Yang Lu-Lu Zhang Shi-Bing Ni |
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Institution: | 1.College of Materials and Chemical Engineering,China Three Gorges University,Yichang,China;2.Hubei Provincial Collaborative Innovation Center for New Energy Microgrid,China Three Gorges University,Yichang,China |
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Abstract: | N-doped graphene/SnS composite as high-performance anode materials has been synthesized by a simultaneous solvothermal method using ethylene glycol as solvent. The morphology, structure, and electrochemical performance of N-doped graphene/SnS composite were investigated by transmission electron microscope (TEM), X-ray diffraction (XRD), Raman spectra, Fourier transform infrared (FTIR) spectra, X-ray photoelectron spectroscopy (XPS), and electrochemical measurements. The SnS nanoparticles with sizes of 3–5 nm uniformly distribute on the N-doped graphene matrix. The N-doped graphene/SnS composite exhibits a relatively high reversible capacity and good cycling stability as anode materials for lithium ion batteries. The good electrochemical performance can be due to that the N-doped graphene as electron conductor improves the electronic conductivity of composite and elastic matrix accommodates the large volume changes of SnS during the cycles. |
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