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Mass Production of High-Quality Transition Metal Dichalcogenides Nanosheets via a Molten Salt Method

机译：熔融盐法大规模生产高质量的过渡金属二硫属化物纳米片

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摘要

2D transition metal dichalcogenides (TMDs) are well suited for energy storage and field-effect transistors because of their thickness-dependent chemical and physical properties. However, as current synthetic methods for 2D TMDs cannot integrate both advantages of liquid-phase syntheses (i.e., massive production and homogeneity) and chemical vapor deposition (i.e., high quality and large lateral size), it still remains a great challenge for mass production of high-quality 2D TMDs. Here, a molten salt method to massively synthesize various high-crystalline TMDs nanosheets (MoS2, WS2, MoSe2, and WSe2) with the thicknesses less than 5 nm is reported, with the production yield over 68% with the reaction time of only several minutes. Additionally, the thickness and size of the as-synthesized nanosheets can be readily controlled through adjusting reaction time and temperature. The as-synthesized MoSe2 nanosheets exhibit good electrochemical performance as pseudocapacitive materials. It is further anticipates that this work will provide a promising strategy for rapid mass production of high-quality nonoxides nanosheets for energy-related applications and beyond.
机译：2D过渡金属二硫化碳（TMD）由于其厚度相关的化学和物理特性而非常适合于能量存储和场效应晶体管。但是，由于当前的二维TMD合成方法不能兼具液相合成（即大量生产和均质化）和化学气相沉积（即高质量和大横向尺寸）的优点，因此对于大规模生产仍然是一个巨大的挑战高质量的2D TMD。在此，报道了一种熔融盐法，可大规模合成厚度小于5 nm的各种高结晶度TMDs纳米片（MoS2，WS2，MoSe2和WSe2），产率超过68％，反应时间仅数分钟。另外，可以通过调节反应时间和温度容易地控制合成纳米片的厚度和尺寸。刚合成的MoSe2纳米片作为假电容材料具有良好的电化学性能。进一步预期，这项工作将为快速大规模生产用于能源相关应用及其他领域的高质量非氧化物纳米片提供有希望的策略。

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  • 来源
    《Advanced Functional Materials》 |2019年第35期|1900649.1-1900649.8|共8页
  • 作者

    Jin Hongrun; Hu Zhimi; Li Tianqi; Huang Liang; Wan Jun; Xue Guobin; Zhou Jun;

  • 作者单位

    Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    mass production; molten salt method; nanosheets; transition metal dichalcogenides;

    机译：批量生产;熔融盐法;纳米液;过渡金属二硫代甲基化物;

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