A facile method to prepare FeS/porous carbon composite as advanced anode material for lithium-ion batteries
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Ferrous sulfide (FeS) particles dispersed in the pores of carbon (FeS/PC) from the polyacrylonitrile carbonization were prepared via a facile one-pot solid-state method, which was extensively characterized by XRD, SEM, TEM, Raman spectrum, and XPS techniques. As an anode material for lithium-ion batteries, this FeS/PC composite can achieve a high initial discharge capacity of 1428.8 mAh/g at 0.1 C, and can maintain 624.9 mAh/g capacity after 150 cycles. The porous carbon accommodates the volume change during the cycling, and the special structure of the FeS/PC composite results in its advanced electrochemical performance by enhancing the structure stability.
KeywordsDischarge Capacity Electrochemical Impedance Spectroscopy Anode Material Coulombic Efficiency Initial Discharge Capacity
We gratefully acknowledge the financial support by National Natural Science Foundation of China (Grant No. 21673203), the Higher Education Science Foundation of Jiangsu Province (No. 15KJB150031), State Key Laboratory of Structural Chemistry Fund (No. 20150009), Natural Science Foundation of Yangzhou (No. YZ 2016122), the Priority Academic Program Development of Jiangsu Higher Education Institutions and the Qing Lan Project. We would also like to acknowledge the technical support received from the Testing Center of Yangzhou University.
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