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A new route to single crystalline vanadium dioxide nanoflakes via thermal reduction

机译:通过热还原制取单晶二氧化钒纳米薄片的新途径

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摘要

Large-area single-crystalline vanadium dioxide nanoflakes were first fabricated via a thermal reduction method in a tube furnace. The sample was characterized by x-ray diffraction, x-ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy. The results show that VO_2 nanoflakes are single-crystalline with a monoclinic structure. The VO_2 nanoflakes have a width of 200-300 nm, a thickness of 50-100 nm, and a length up to 1-2 μm. It is found that single-crystalline VO_2 nanoflakes show a novel and complicated 5-7-step Li-storage behavior for an insertion amount of <0.6 mol lithium per mol of VO_2.
机译:首先在管式炉中通过热还原法制备大面积的单晶二氧化钒纳米薄片。通过X射线衍射,X射线光电子能谱,扫描电子显微镜和透射电子显微镜对样品进行表征。结果表明,VO_2纳米片为单晶,具有单斜晶结构。 VO_2纳米薄片的宽度为200-300 nm,厚度为50-100 nm,长度最大为1-2μm。发现单晶VO_2纳米薄片显示出新颖且复杂的5-7步锂存储行为,其中每摩尔VO_2的插入量小于0.6摩尔锂。

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