| 电解MnO_2机械球磨-掺杂改性及其在超级电容器中的应用 |
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| 引用本文： | 蔡勇,戴曦,陈奇志.电解MnO_2机械球磨-掺杂改性及其在超级电容器中的应用[J].中小企业科技,2010(8). |
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| 作者姓名： | 蔡勇 戴曦 陈奇志 |
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| 作者单位： | 中南大学冶金科学与工程学院;广西有色金属集团汇元锰业有限公司; |
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| 摘 要： | 以电解二氧化锰(EMD)为原料,采用机械球磨-掺杂对其进行改性制备了二氧化锰超级电容器电极材料,并采用SEM和XRD手段对产物进行表征。结果表明,改性前后样品均为球形γ-二氧化锰,改性前电极比容量为140 F/g,通过机械球磨-掺杂Al_2O_3改性的EMD电极材料比未改性的有较好的循环伏安特性,且当添加质量分数为1%时,电极比容量达到最大,为165 F/g,经过200次循环后容量仍保持在90%以上。
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| 关 键 词： | 电解氧化锰(EMD) 超级电容器 改性 |
Modification of MnO_2 Electrode Materials for Super Capacitor |
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| Authors: | CAI Yong DAI Xi CHEN Qi-zhi |
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| Institution: | CAI Yong~(1,2),DAI Xi~1,CHEN Qi-zhi~2 (1.School of Metallurgy , Engineering of Central South University,Changsha Hunan 410083,2.Huiyuan Manganese Co.,Ltd.of Guangxi Nonferrous Metal Group,Laibin Guangxi 546138) |
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| Abstract: | With EMD as raw material,MnO_2 used for electrode materials of super capacitor was prepared by ball-milling and doped modification.The product is characterized by XRD and SEM.The results shows that the EMD after and before modification is spherical-MnO_2.The specific capacity of EMD before modification is 140 F/g and the cyclic voltage-ampere characteristic of the as-modified EMD electrode material is better than non-modified EMD.While doping amount is 1% (mass fraction of Al_2O_3),the electrode material co... |
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| Keywords: | EMD super capacitor modification |
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