| 纳米氧化锰电极材料的制备和电容特性研究 |
| Preparation and Capacitive Characteristics of Nano-MnO2 |
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| 摘要: |
| 关键词: 超级电容器 氧化锰 固相反应 电容特性 |
| 基金项目: |
| Abstract: The nano-MnO2 as active electrode material for supercapacitor was synthesized by solid-state reaction between KMnO4 and manganese acetate at room temperature. The products annealed at 100 ℃ and 200 ℃ were characterized by XRD and TEM. The results showed the sample annealed at 100 ℃ was poorly crystallized phase with an average grain size of <20 nm. Electrochemical performances of manganese oxide electrode were investigated by cyclic voltammetry and constant current charge/discharge. The manganese oxide electrode annealed at 100 ℃ in 1 mol·L-1 Na2SO4 aqueous electrolyte exhibited excellent capacitive behavior between -0.2 and +0.8 V (vs SCE). By 5 mA and 10 mA constant current charge/discharge, the nano-MnO2 annealed at 100 ℃ can provide a specific capacitance of 158.5 F·g-1 and 151.2 F·g-1, respectively. |
| Keywords: supercapacitor manganese oxide solid state reaction capacitive characteristics |
| 投稿时间：2004-06-28 修订日期：2004-12-02 |
| 摘要点击次数: 1103 |
| 全文下载次数: 2003 |
| 张治安,杨邦朝,胡永达,邓梅根,汪斌华.纳米氧化锰电极材料的制备和电容特性研究[J].无机化学学报,2005,21(3):389-393. |
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