| 纳米氧化锰电极在中性水系电解液中的电容特性 |
| |
| 引用本文： | 杨邦朝,张治安,邓梅根,胡永达,汪斌华.纳米氧化锰电极在中性水系电解液中的电容特性[J].电子元件与材料,2005,24(6):33-36. |
| |
| 作者姓名： | 杨邦朝 张治安 邓梅根 胡永达 汪斌华 |
| |
| 作者单位： | 电子科技大学微电子与固体电子学院,四川,成都,610054;电子科技大学微电子与固体电子学院,四川,成都,610054;电子科技大学微电子与固体电子学院,四川,成都,610054;电子科技大学微电子与固体电子学院,四川,成都,610054;电子科技大学微电子与固体电子学院,四川,成都,610054 |
| |
| 摘 要： | 利用液相共沉淀法制备纳米氧化锰。用XRD和SEM进行了材料表征。以泡沫镍作集流体,以KCl、Na2SO4和K2SO4为电解液,通过循环伏安法,研究了不同的电位窗口、扫描速度和浓度对氧化锰电极电容特性的影响。结果表明,样品为无定形的α-MnO2·nH2O,粒径为40～50nm。氧化锰电极在Na2SO4和K2SO4电解液中具有良好的稳定性,在0.5mol/LK2SO4溶液中,–0.2～0.8V(vsSCE)的电位窗口内,具有良好的电容行为,比容量高达143.7F/g。
|
| 关 键 词： | 电子技术 超电容器 氧化锰 电解液 循环伏安 |
| 文章编号： | 1001-2028(2005)06-0033-04 |
Capacitive Behaviors of Nano-MnO2 Electrode with Neutral Aqueous Electrolytes |
| |
| Yang Bang-chao,ZHANG Zhi-an,DENG Mei-gen,HU Yong-da,WANG Bin-hua.Capacitive Behaviors of Nano-MnO2 Electrode with Neutral Aqueous Electrolytes[J].Electronic Components & Materials,2005,24(6):33-36. |
| |
| Authors: | Yang Bang-chao ZHANG Zhi-an DENG Mei-gen HU Yong-da WANG Bin-hua |
| |
| Abstract: | Amorphous hydrous nano-MnO2 was synthesized by chemical coprecipitation method. Physical properties of MnO2 were characterized by XRD and SEM. Under the conditions of different potential windows, different sweep rates and different concentrations aqueous electrolytes, the effects on MnO2 electrode pressed on foam nickel current collector were studied by cyclic voltammogram (CV) in KCl, Na2SO4 and K2SO4 electrolytes. Amorphous hydrous nano-MnO2 in Na2SO4 and K2SO4 electrolytes proves to be excellent electrode material for supercapacitor. Amorphous hydrous nano-MnO2 within a potential window range of –0.2 to +0.8 V (vs SCE) can provide a specific capacitance of 143.7 F/g in 0.5 mol/L K2SO4 aqueous electrolytes at sweep rate 4 mV/s. |
| |
| Keywords: | electronic technology supercapacitor MnO2 electrolyte cyclic voltammogram (CV) |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
