| MnO2纳米空心球的制备及其电化学性能 |
| |
| 引用本文： | 汪晓莉,郑玉婴,刘先斌. MnO2纳米空心球的制备及其电化学性能[J]. 化工学报, 2015, 66(3): 1201-1207. DOI: 10.11949/j.issn.0438-1157.20141446 |
| |
| 作者姓名： | 汪晓莉 郑玉婴 刘先斌 |
| |
| 作者单位： | 福州大学材料科学与工程学院, 福建 福州 350116 |
| |
| 基金项目： | 福建省高校产学合作科技重大项目(2012H6008)；福州市科技计划项目(2013-G-92)。@@@@supported by the Industry-University Cooperation Key Project of Science and Technology of Fujian Province，the Fuzhou Science and Technology Plan Project |
| |
| 摘 要： | 采用水热法通过添加Ce离子制备了MnO2纳米空心球电极材料。Ce离子对MnO2的形貌和结晶程度有很大的影响,添加Ce离子后生成由纳米棒组成的中空球,中空球比表面积(BET)达到315.2 m2·g-1。MnO2电极电化学测试结果表明:当铈锰摩尔比为0.2时电极材料具有较好的电化学性能,其比电容达到178.6 F·g-1,与未加Ce离子相比其比电容提高了2.6倍,而且经过1000次循环稳定性测试后比电容仍保留了90.5%。这些结果表明添加Ce离子有利于形成中空结构,并提高了MnO2电极的比电容。
|
| 关 键 词： | 二氧化锰 纳米结构 水热 电化学 超级电容器 |
| 收稿时间： | 2014-09-24 |
| 修稿时间： | 2014-10-30 |
Synthesis and electrochemical properties of MnO2 hollow nanospheres |
| |
| WANG Xiaoli,ZHENG Yuying,LIU Xianbin. Synthesis and electrochemical properties of MnO2 hollow nanospheres[J]. Journal of Chemical Industry and Engineering(China), 2015, 66(3): 1201-1207. DOI: 10.11949/j.issn.0438-1157.20141446 |
| |
| Authors: | WANG Xiaoli ZHENG Yuying LIU Xianbin |
| |
| Affiliation: | School of Materials Science and Engineering, Fuzhou University, Fuzhou 350116, Fujian, China |
| |
| Abstract: | Electrode material of MnO2 hollow nanosphere was synthesized via a simple hydrothermal process in the presence of Ce ion. Ce ion played a crucial role in controlling the morphology and crystalline structure of MnO2. The hollow nanosphere consisted of nanorods, and Brunauer-Emmet-Teller (BET) specific surface area of the hollow nanosphere was 315.2 m2·g-1. Electrochemical behavior of MnO2 electrode material was measured by cyclic voltammetry and galvanostatic charge-discharge. Better electrochemical properties of MnO2 electrode could be obtained when mole ratio of Ce to Mn was 0.2, and specific capacitance of as-prepared MnO2 electrode was 178.6 F·g-1, 2.6 times higher than MnO2 electrode without Ce ions. Moreover, MnO2 electrode exhibited remarkable cyclability, and specific capacitance retained 90.5% even after 1000 cycles. Ce ion was favorable for forming a hollow structure, and improved specific capacitance of MnO2 electrode. |
| |
| Keywords: | manganese dioxide nanostructure hydrothermal electrochemistry supercapacitor |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《化工学报》浏览原始摘要信息 |
|
点击此处可从《化工学报》下载免费的PDF全文 |
|
