MoSe2 is an attractive transition-metal dichalcogenide with a two-dimensional layered structure and various attractive properties. Although MoSe2 is a promising negative electrode material for electrochemical applications, further investigation of MoSe2 has been limited, mainly by the lack of MoSe2 mass-production methods. Here, we report a rapid and ultra-high-yield synthesis method of obtaining MoSe2 nanosheets with high crystallinity and large grains by ampoule-loaded chemical vapor deposition. Application of high pressure to an ampoule-type quartz tube containing MoO3 and Se powders initiated rapid reactions that produced vertically oriented MoSe2 nanosheets with grain sizes of up to ∼100 μm and yields of ∼15 mg h-1. Spectroscopy and microscopy characterizations confirmed the high crystallinity of the obtained MoSe2 nanosheets. Transistors and lithium-ion battery cells fabricated with the synthesized MoSe2 nanosheets showed good performance, thereby further indicating their high quality. The proposed simple scalable synthesis method can pave the way for diverse electrical and electrochemical applications of MoSe2.

中文翻译：

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通过安瓿瓶负载化学气相沉积快速且批量生产高结晶度的MoSe2纳米片。

MoSe 2是有吸引力的过渡金属二卤化二硫化钨，具有二维分层结构和各种吸引人的特性。尽管MoSe2是用于电化学应用的有希望的负极材料，但主要由于缺乏MoSe2的批量生产方法，对MoSe2的进一步研究受到了限制。在这里，我们报告了一种快速且超高产率的合成方法，通过安瓿瓶负载化学气相沉积获得具有高结晶度和大晶粒的MoSe2纳米片。在装有MoO3和Se粉末的安瓿瓶型石英管中施加高压会引发快速反应，从而产生垂直取向的MoSe2纳米片，其晶粒尺寸可达〜100μm，产量约为〜15 mg h-1。光谱学和显微镜表征证实了所获得的MoSe 2纳米片的高结晶度。用合成的MoSe 2纳米片制造的晶体管和锂离子电池显示出良好的性能，从而进一步表明了它们的高质量。提出的简单可扩展的合成方法可以为MoSe2的各种电气和电化学应用铺平道路。