Abstract
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 VO2 nanoflakes are single-crystalline with a monoclinic structure. The VO2 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 VO2 nanoflakes show a novel and complicated 5–7-step Li-storage behavior for an insertion amount of <0.6 mol lithium per mol of VO2.
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ACKNOWLEDGMENTS
This work was supported in part by the National 863 and 973 projects, and the National Science Foundation of China under Grant Nos. 90201036, 60571045, and 60228005.
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Tian, J., Liu, F., Shen, C. et al. A new route to single crystalline vanadium dioxide nanoflakes via thermal reduction. Journal of Materials Research 22, 1921–1926 (2007). https://doi.org/10.1557/jmr.2007.0255
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DOI: https://doi.org/10.1557/jmr.2007.0255