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采用电沉积的方法,以减薄阻挡层后的铝基多孔阳极氧化铝(AAO)为模板,制备了银纳米线。采用场发射扫描电镜(FESEM)和X射线衍射(XRD)等检测手段对产物的形貌和结构进行了表征。实验结果表明,所得的银纳米线具有面心立方结构,长度超过4μm,平均直径60nm左右。将所制备的银纳米线制成电极,电化学性能测试表明,银纳米线具有良好的可逆性和较高的比电容,当电流密度为5mA/cm2时,单电极比容量达到1110F/g。机理分析表明,一维结构的Ag纳米线对于提高电化学电容器的综合性能具有重要意义。
The silver nanowires were prepared by electro-deposition method using aluminum-based porous anodic aluminum oxide (AAO) as a template after thinning the barrier layer. The morphology and structure of the product were characterized by field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD). The experimental results show that the obtained silver nanowires have a face-centered cubic structure with a length of more than 4 μm and an average diameter of about 60 nm. The prepared silver nanowires were made into electrodes. The electrochemical tests showed that the silver nanowires have good reversibility and high specific capacitance. When the current density is 5mA / cm2, the specific capacity of the single electrode reaches 1110F / g. The mechanism analysis shows that the one-dimensional structure of Ag nanowires is of great significance to improve the comprehensive performance of electrochemical capacitors.