One-step preparation and electrochemical properties of accordion-like VO2 nanowire arrays
首发时间:2010-10-18
Abstract:Accordion-like VO2 nanowire arrays were synthesized using V2O5 power as the precursor and cetyltrimethyl ammonium bromide (CTAB) as structure-directing templates by one-step rheological phase reaction followed by self-assembling process. Characterizations of the samples were carried out by XRD, SEM, the results show nanowire arrays were approximately cubic structure with the length of 10μm and the width and height of 5μm. The nanowire arrays were constructed from single nanowires of diameter around 100-160nm and length around 2~3μm. Cyclic voltammetry and galvanostatic charge-discharge indicates that the initial charge and discharge capacity of the accordion-like nanowire arrays cathodes are up to 262mAh/g and 288mAh/g respectively , much higher than the capacity of the counterpart with the disordered structure.
keywords: Materials Physics and Chemistry VO2 accordion-like nanowire array self-assembly one-step preparation electrochemical properties
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手风琴状VO2纳米线阵列的一步法制备与电化学性能
摘要:采用简单的流变相自组装方法,以五氧化二钒粉末为原料,十六烷基三甲基溴化铵(CTAB)为模板导向剂,合成了VO2手风琴状纳米线阵列。利用XRD,SEM等对样品进行了表征,结果表明纳米线阵列呈现手风琴状的近似立方结构,其长度约为10μm,宽度和高度约为5μm。组成纳米线阵列的单根纳米线直径在100-160nm,长度在2~3μm之间。循环伏安(CV)和恒流充放电测试表明,该材料首次充放电分别高达262mAh/g和288mAh/g,优于其对应的无序结构材料性能。
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No.4388605280885128****
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