Taiwan Institute of Chemical Engineers;Elsevier B.V
摘要:
摘要： •Flower-like microspheres were prepared using solvothermal method.•The hierarchical structure can alleviate the volume change during cycles.•A retention of 84% after 100 cycles was obtained at 300mA g−1.•A reversible capacity of 285mA h −1 was obtained at 5000mA g−1. In this study, SnS2 powders with various surface morphologies are prepared using a facile solvothermal route with three different solvents. The powders synthesized in ethylene glycol and deionized water exhibit aggregates composed of nanoplates, whereas those synthesized in ethanol show flower-like microspheres (diameter: 1–2µm) composed of nanosheets (thickness: 60–70nm). The hierarchical flower-like microstructures can alleviate the volume change during charge/discharge cycles due to their porous nature. In addition, SnS2 synthesized at a lower temperature (100°C) has nanoplates with a lower thickness, improving electrochemical performance. At a constant current density of 300mA g−1, the microflowers exhibit a reversible capacity of 460mAh g−1 after 100 cycles, a retention of 84%. More importantly, at a higher current density of 5000mA g−1, a reversible capacity of 285 mAh g−1 is obtained. This study demonstrates that SnS2 synthesized using suitable processing design strategies can be used as an efficient active material for lithium-ion batteries. [Display omitted] 出版者： Elsevier B.V 出版日期： 2016-09 出處： Journal of the Taiwan Institute of Chemical Engineers, 2016-09, Vol.66, p.292-300 資源來源： ScienceDirect (Elsevier) Journals 版權： 2016 Taiwan Institute of Chemical Engineers 識別號： ISSN: 1876-1070 識別號： EISSN: 1876-1089 識別號： DOI: 10.1016/j.jtice.2016.07.003
