| 花瓣状微球MoS_2/石墨烯复合材料的制备及其电化学性能 |
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| 引用本文： | 张传香,张晓雪,陶海军.花瓣状微球MoS_2/石墨烯复合材料的制备及其电化学性能[J].物理化学学报,2014,30(10):1963-1969. |
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| 作者姓名： | 张传香 张晓雪 陶海军 |
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| 作者单位： | 1. College of Materials Engineering, Nanjing Institute of Technology, Nanjing 211167, P. R. China;
2. Jiangsu Key Laboratory of Advanced Sturctural Materials and Application Technolygy, Nanjing 211167, P. R. China;
3. College of Materials Science and Technology, Nanjing University of Aeronautics & Astronautics, Nanjing 211106, P. R. China |
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| 基金项目： | China (YKJ201206)国家自然科学基金，江苏省自然科学基金，南京工程学院科研启动基金 |
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| 摘 要： | 采用有利于二维层状结构形成的L-半胱氨酸作为硫源,钼酸钠作为钼源,制备聚乙烯基吡咯烷酮(PVP)辅助水热合成花瓣状微球形貌的MoS2/还原氧化石墨烯复合电极材料(PVP-MoS2/RGO).X射线衍射(XRD)及透射电子显微镜(TEM)证实,经过PVP的适量添加,MoS2有序堆垛结构的片层数目明显减少.扫描电子显微镜(SEM)显示,添加适量PVP的MoS2/石墨烯材料具有分散性更好的花瓣状微球形貌.上述的少层有序堆垛结构及复合材料的良好分散性缩短了MoS2中锂离子的嵌入/脱出路径,使其具有更高的容量、循环稳定性和倍率性能.
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| 关 键 词： | 花瓣状微球 PVP-MoS2/RGO 容量 循环稳定性 倍率性能 |
| 收稿时间： | 2014-05-28 |
Synthesis and Electrochemical Properties of MoS2/Graphene Composites with Petal-Shaped Microspheres |
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| ZHANG Chuan-Xiang,ZHANG Xiao-Xue,TAO Hai-Jun.Synthesis and Electrochemical Properties of MoS2/Graphene Composites with Petal-Shaped Microspheres[J].Acta Physico-Chimica Sinica,2014,30(10):1963-1969. |
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| Authors: | ZHANG Chuan-Xiang ZHANG Xiao-Xue TAO Hai-Jun |
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| Institution: | 1. College of Materials Engineering, Nanjing Institute of Technology, Nanjing 211167, P. R. China;
2. Jiangsu Key Laboratory of Advanced Sturctural Materials and Application Technolygy, Nanjing 211167, P. R. China;
3. College of Materials Science and Technology, Nanjing University of Aeronautics & Astronautics, Nanjing 211106, P. R. China |
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| Abstract: | MoS2/graphene composites were synthesized using L-cysteine and sodium molybdate as the sources of sulfur and molybdenum, and L-cysteine was found to be beneficial for two-dimensional layered structure formation. Polyvinylpyrrolidone (PVP)-assisted hydrothermal synthesis gave petal-shaped MoS2/ reduction of graphene oxide (RGO) composite electrode materials (PVP-MoS2/RGO). X-ray diffraction and transmission electron microscopy confirmed that MoS2 changed to a less ordered layer structure from the multilayer stacking structure after moderate addition of PVP. Scanning electron microscopy showed that the moderate PVP-assisted MoS2/RGO material had a petal-shaped microsphere morphology with good dispersion. The ordered stacking structure with less layers and good dispersion of the composite materials shorten the embedded in/out path of lithium ions in MoS2, which obviously improved their capacity, cycle stability, and rate performance as lithium ion battery anode materials. |
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| Keywords: | Petal shaped microsphere PVP-MoS2/RGO Capacity Cycle stability Rate performance |
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