铝基氧化铝模板制备Ag纳米线及其电化学性质  

Preparation and Electrochemical properties of Ag nanowires using anodic aluminum oxide template attached to aluminum substrate

作　　者：王耀先[1] 贺国旭[1] 张秋霞[1] 王香[1] 胡中爱[2] 

机构地区：[1]平顶山学院化学化工学院,平顶山467000 [2]西北师范大学化学化工学院,兰州730000

出　　处：《化工新型材料》2013年第1期85-87,共3页New Chemical Materials

基　　金：国家自然科学基金(20963009)

摘　　要：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。Ag nanowires were prepared by electrochemical deposition method in anodie aluminum oxide（ AAO）atta- ehed to aluminum substrate templates. The morphology and structure of Ag nanowires were characterized by Field emis- sion scanning electron microscopy（FV.SEM） and X-ray diffraction（XRD）, respectively. The results indicated that the diame- ter of the Ag nanowires about 60nm, and 4μm in length, the Ag nanowire had face-centered-cubic structure. Further investi- gation on the electrochemical performance of Ag nanowires used as the electrode materials of electrochemical capacitor was studied. The results showed that the Ag nanowires had superior capacity and reversibility. A maximum specific capacitance of 1110 Fg^-1 was obtained at constant current density of 5mAcro 2. The mechanism analysis showed that the Ag nanowires were promising electrode materials for electrochemical capacitor.

关 键 词：Ag 纳米线 电化学电容器 电极 比电容 

分 类 号：TB383.1[一般工业技术—材料科学与工程] O614.122[理学—无机化学]