材料科学
静电纺丝
纳米纤维
碳化
阳极
石墨烯
碳纳米纤维
化学工程
锂(药物)
电化学
纳米技术
扫描电子显微镜
透射电子显微镜
无定形碳
锂离子电池
无定形固体
复合材料
碳纤维
碳纳米管
电极
电池(电)
复合数
聚合物
物理
物理化学
功率(物理)
医学
有机化学
化学
量子力学
工程类
内分泌学
作者
Chenyang Zhao,Junhua Kong,Xiayin Yao,Xiaosheng Tang,Yuliang Dong,Si Lei Phua,Xuehong Lu
摘要
In this work, highly flexible MoS2-based lithium-ion battery anodes composed of disordered thin MoS2 nanoflakes encapsulated in amorphous carbon nanofibrous mats were fabricated for the first time through hydrothermal synthesis of graphene-like MoS2, followed by electrospinning and carbonization. X-ray diffraction as well as scanning and transmission electron microscopic studies show that the as-synthesized MoS2 nanoflakes have a thickness of about 5 nm with an expanded interlayer spacing, and their structure and morphology are well-retained after the electrospinning and carbonization. At relatively low MoS2 contents, the nanoflakes are dispersed and well-embedded in the carbon nanofibers. Consequently, excellent electrochemical performance, including good cyclability and high rate capacity, was achieved with the hybrid nanofibrous mat at the MoS2 content of 47%, which may be attributed to the fine thickness and multilayered structure of the MoS2 sheets with an expanded interlayer spacing, the good charge conduction provided by the high-aspect-ratio carbon nanofibers, and the robustness of the nanofibrous mat.
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