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| Preparation of ZnS@C/rGO Composite for Electrochemical Reversible Lithium Storage |
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| Abstract: ZnS@C/reduce graphene oxide (rGO) composite was prepared by solvothermal reaction-hydrothermal treatment route. ZnS nanocrystal coated by amorphous carbon (ZnS@C) was prepared by the first-step solvothermal reaction, then ZnS@C/rGO was prepared by the second-step hydrothermal treatment. The morphology and microstructure of samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). Electrochemical test results demonstrated that the as-prepared ZnS@C/rGO composite exhibited significantly enhanced electrochemical lithium storage performance in comparison to ZnS@C and ZnS/rGO. At the current density of 100 mA·g-1, ZnS@C/rGO electrode delivered the reversible specific capacity of 1 101 mAh·g-1 and 1 569 mAh·g-1, respectively, at the 1st and 100th cycle. After 1 200 cycles at the different current densities, the reversible specific capacity of 1 096 mAh·g-1 was remained at 2.0 A·g-1, indicating its stable long-cycle performance. |
| Keywords: lithium-ion battery solvothermal reaction hydrothermal treatment amorphous carbon reduced graphene oxide |
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| XU Gang,JIANG Xiao-Nan,CHEN Wei-Xiang.Preparation of ZnS@C/rGO Composite for Electrochemical Reversible Lithium Storage[J].Chinese Journal of Inorganic Chemistry,2022,38(5):891-900. |
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