| 超级电容器Mn-Pb纳米复合电极材料的电化学性能研究 |
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| 引用本文： | 张治安,杨邦朝,胡永达.超级电容器Mn-Pb纳米复合电极材料的电化学性能研究[J].功能材料,2006,37(2):315-318. |
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| 作者姓名： | 张治安 杨邦朝 胡永达 |
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| 作者单位： | 中南大学,冶金科学与工程学院,湖南,长沙,410083;电子科技大学,微电子与固体电子学院,四川,成都,610054 |
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| 摘 要： | 利用低温固相反应法制备了Mn-Pb复合氧化物超级电容器电极材料.采用XRD、TEM、循环伏安和恒流充放电法对电极材料的形貌和结构特点以及电化学性能进行了测试分析.结果表明,复合氧化物的粒径均为纳米尺寸,呈无定型结构.复合氧化物在1mol/L Na2SO4中,电位窗口为-0.2～0.9(V vs.SCE)范围内具有典型的电容特征.纳米氧化物电极比容量随放电电流的增大而减小.当放电电流为2mA时,Mn-Pb复合氧化物电极的比容量为180.5F/g.
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| 关 键 词： | 超级电容器 电极材料 复合氧化物 电容特性 |
| 文章编号： | 1001-9731(2006)02-0315-04 |
| 收稿时间： | 2005-03-21 |
| 修稿时间： | 2005-06-21 |
Electrochemical investigation of Mn-Pb nanocomposite oxide for supercapacitor electrode material |
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| ZHANG Zhi-an,YANG Bang-chao,HU Yong-da.Electrochemical investigation of Mn-Pb nanocomposite oxide for supercapacitor electrode material[J].Journal of Functional Materials,2006,37(2):315-318. |
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| Authors: | ZHANG Zhi-an YANG Bang-chao HU Yong-da |
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| Affiliation: | 1.School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China; 2. School of Microelectronics and Solid-State Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China |
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| Abstract: | Mn-Pb nanocomposite oxide, as electrode material for supercapacitor, was successfully prepared by solid-state reaction of KMnO4 with manganese acetate and lead acetate at low temperature. The nanocomposite oxide was characterized using X-ray diffraction (XRD) and transmission electron microscopy (TEM). The capacitive characteristics of the nanocomposite oxide in 1mol/L Na2 SO4 aqueous electrolyte were investigated with cyclic voltammetry and chronopotentiometry in a three-electrode system. It was found that the nanocomposite oxide was amorphous with the particle size of 10nm. The nanocomposite oxide exhibited excellent capacitive properties within the potential range from -0.2～+0.9 (V vs. SCE), indicating a promising electrode material for supercapacitor. The specific capacitance of the nanocomposite oxide decreased with increasing discharge current and it was 180.5F/g by constant current discharge of 2mA. |
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| Keywords: | supercapacltor electrode materlal nanocomposlte capacitive characteristics |
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