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Li-driven electrochemical properties of WO3 nanorods

机译：锂驱动WO3纳米棒的电化学性能

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摘要

The Li-driven electrochemical properties of monoclinic WO3 nanorods, which are prepared by a solution-based colloidal approach, have been studied, and the relationship between the properties and the nanostructures of the material has been established. The electrochemical reactions towards lithium involved in WO3 nanorods were investigated by means of a galvanostatic method and an impedance technique, and superior characteristics associated with one-dimensional nanostructures were observed. WO3 nanorods with a high aspect ratio were found to yield an intercalation capacity up to 1.12 Li per formula unit, much higher than the value of 0.78 Li per formula unit for bulk WO3. This can be explained on the basis of the unique rod-like structure that effectively enhanced structure stability. The evolution of Li-driven reaction kinetics further illustrated benefits of WO3 nanorods owing to the increased edge and corner effects.
机译：研究了基于溶液的胶体方法制备的单斜晶WO3纳米棒的锂驱动电化学性能，并建立了材料的性能与纳米结构之间的关系。通过恒电流法和阻抗技术研究了WO3纳米棒中涉及的锂的电化学反应，并观察到与一维纳米结构相关的优异特性。发现高纵横比的WO3纳米棒的插层容量高达每配方单位1.12 Li，远高于大体积WO3的每配方单位0.78 Li的值。这可以基于有效增强结构稳定性的独特杆状结构进行解释。 Li驱动的反应动力学的演变进一步说明了WO3纳米棒的优势，因为其边缘和角落效应增加。

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