| 湿法制备纳米二氧化锰及其电化学性能的研究 |
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| 引用本文： | 常照荣,刘院英,汤宏伟,李云平. 湿法制备纳米二氧化锰及其电化学性能的研究[J]. 河南师范大学学报(自然科学版), 2006, 34(1): 77-81 |
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| 作者姓名： | 常照荣 刘院英 汤宏伟 李云平 |
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| 作者单位： | 河南师范大学,化学环境与科学学院,河南,新乡,453007 |
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| 摘 要： | 分别用氧化法、还原法和氧化还原法在溶液中反应制备了MnO2粉末.用X射线衍射(XRD)、扫描电子显微镜(SEM)、循环伏安、交流阻抗、恒电流充放电等测试方法对3种样品结构、形貌和电化学性能进行分析比较.研究表明:三样品均为无定型MnO2,形貌呈团聚的球形,其中用氧化法制备的MnO2具有良好的电容性能和放电容量.
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| 关 键 词： | 超级电容器 锂离子电池 MnO2电极 电极材料 |
| 文章编号： | 1000-2367(2006)01-0077-05 |
| 收稿时间： | 2005-04-26 |
| 修稿时间： | 2005-04-26 |
Studies on Preparation and Electrochemical Performance for Nano-MnO2 with Wet Chemical Method |
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| CHANG Zhao-rong,LIU Yuan-ying,TANG Hong-wei,LI Yun-ping. Studies on Preparation and Electrochemical Performance for Nano-MnO2 with Wet Chemical Method[J]. Journal of Henan Normal University(Natural Science), 2006, 34(1): 77-81 |
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| Authors: | CHANG Zhao-rong LIU Yuan-ying TANG Hong-wei LI Yun-ping |
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| Affiliation: | College of Chemistry and Environmental Science, Henan Normal University, Xinxiang 453007,China |
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| Abstract: | Three kinds of manganese dioxide were prepared by oxidation,reduction and redox method in aqueous solution,respectively.X-ray diffraction(XRD),scanning electron microscopy(SEM),cyclic voltammetry(CV),alternating current impedance and constant current charge-discharge tests were used to characterize the structure,morphology and electrochemical performance of the samples.The results showed that the MnO_2 powder synthesized was amorphous,agglomerate nanometer spherical particles,and MnO_2 by preparation with oxidation method exhibited better capacitor performance and higher discharge capacity. |
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| Keywords: | supercapacitor Lithium batteries MnO2 electrode electrode material |
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