| 纳米MnO2超级电容器的研究 |
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| 引用本文： | 张宝宏,张娜.纳米MnO2超级电容器的研究[J].物理化学学报,2003,19(3):286-288. |
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| 作者姓名： | 张宝宏 张娜 |
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| 作者单位： | Department of Chemical Engineering, Harbin Engineering University,Harbin, 150001 |
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| 基金项目： | 黑龙江省发展高新技术项目基金(20020101) |
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| 摘 要： | 用固相合成法制备纳米MnO2，作为超级电容器材料，通过循环伏安、交流阻抗与恒电流充放电等测试手段对MnO2电极进行分析.结果表明,以1 mol•L－1 KOH为电解液， MnO2电极在－0.1～0.6 V(vs. Hg/HgO)的电压范围内具有良好的法拉第电容性能.在不同电流密度下，电极比容量达240.25到325.21 F•g－1.恒电流充放电5000次后，电极容量衰减不超过10％.
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| 关 键 词： | 超级电容器 MnO2电极 电极材料 比容量 循环寿命 |
| 收稿时间： | 2002-07-29 |
| 修稿时间： | 2002年7月29日 |
Research on Nanophase MnO2 for Electrochemical Supercapacitor |
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| Zhang Bao- Hong Zhang Na.Research on Nanophase MnO2 for Electrochemical Supercapacitor[J].Acta Physico-Chimica Sinica,2003,19(3):286-288. |
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| Authors: | Zhang Bao- Hong Zhang Na |
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| Institution: | Department of Chemical Engineering, Harbin Engineering University,Harbin, 150001 |
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| Abstract: | The nanophase MnO2 was synthesized by solid-phase reaction as electrode material for electrochemical supercapacitor and the MnO2 electrode was tested by cyclic voltammetry(CV),electrochemical impedance spectrometry (EIS) and constant charge-discharge curves. The result shows that MnO2 electrode has good performance of faradic pseudocapacitance in 1mol•L－1 KOH between －0.1 and 0.6 V(vs Hg/HgO). The electrode can provide a specific capacitance of 240.25 to 325.21 F•g－1 at different current densities. After 5000 cycles of constant charge-discharge the capacitance reduces no more than 10％. |
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| Keywords: | Supercapacitor MnO2 electrode Electrode material Specific capaci tance Cycle life |
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