Preparation and electrochemical performances of α-MnO2 nanorod for supercapacitor
Preparation and electrochemical performances of α-MnO2 nanorod for supercapacitor
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DOI：
10.1016/j.matlet.2010.10.048
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发表时间：
2011-01-31
影响因子：
3
通讯作者：
Chen, Lifei
中科院分区：
文献类型：
--
作者：
Li, Yang;Xie, Huaqing;Chen, Lifei
以表面活性剂为结构导向剂，采用化学沉淀法制备α-MnO 2纳米棒，并在800 ℃下进行热处理。利用透射电子显微镜（TEM）、X射线光电子能谱（XPS）和X射线衍射（XRD）对所制备的α-MnO 2的形貌和结构进行了表征。结果表明，成功合成了无杂质的α-MnO 2纳米棒，其直径小于50 nm。在循环伏安和恒流充放电测试中，α-MnO 2纳米棒表现出规则的电容行为和良好的循环稳定性，最大电容量为166.2 F/g，表明α-MnO 2纳米棒是一种潜在的超级电容器电极材料。(C)2010爱思唯尔有限公司版权所有。
alpha-MnO2 nanorod was prepared by chemical precipitation with surfactant as the structure-directing agent and subsequent heat treatment at 800 degrees C. The morphology and structure of the prepared alpha-MnO2 were investigated by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). It was revealed that the alpha-MnO2 nanorod was successfully synthesized without impurities and the diameter of the nanorod was less than 50 nm. In cyclic voltammetry and galvanostatical discharge-charge test, the alpha-MnO2 nanorod showed regular capacitive behaviors and good cycling stabilities and delivered a maximum capacitance of 166.2 F/g, which indicated that the alpha-MnO2 nanorod was a potential good electrode material for supercapacitor application. (C) 2010 Elsevier B.V. All rights reserved.