Abstract
A simple and novel method based on recrystallization-sulfurization method has been developed to fabricate Ce2S3/MoS2 composite and their structure, morphology and electrochemical performance is researched systematically. The Ce2S3/MoS2 composite exhibit enhanced electrochemical performance compared with Ce2S3 and MoS2. Among them, Ce2S3/MoS2 composite has an initial reversible discharge capacity of 187.5 mAh g−1, coulombic efficiency of 78.6% and a reversible capacity as high as 636.5 mAh g−1, coulombic efficiency of 99.7% after 500 cycles at a current density of 100 mA g−1 and the highest discharge capacity of 97.3 mAh g−1 at a high current density of 1000 mA g−1, showing the best reversible capacity and cycling performance. The results show that the compositing between MoS2 and Ce2S3 can maintain the stability of the structure during the charge/discharge process and existence of Ce2S3 can enhance the electrical conductivity of Ce2S3/MoS2 composite and further improves the reversible capacities, cycling performance and rate performance of Ce2S3/MoS2 composite.
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Acknowledgements
This research has been supported by the Natural Science Foundation of Jilin Province (No. 20170101128JC), the Science and Technology Research Project of the Education Department of Jilin Province during the 13th 5-year plan period (No. 2016-359), the Youth Foundation of Changchun University of Science and Technology (Nos. XQNJJ-2014-13, XJJLG-2014-10), the Science and Technology Planning Project of Changchun City (No. 2013064).
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Hou, B., Wang, X., Yao, J. et al. Fabrication of Ce2S3/MoS2 composites via recrystallization-sulfurization method and their improved electrochemical performance for lithium-ion batteries. J Mater Sci: Mater Electron 28, 12297–12305 (2017). https://doi.org/10.1007/s10854-017-7047-7
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DOI: https://doi.org/10.1007/s10854-017-7047-7