| 水热法合成α-MnO2纳米棒及其电化学性能 | |
| Hydrothermal Synthesis of α-MnO2 Nanorods and Their Electrochemical Performances | |
| 摘要: 以KMnO4、氧化石墨(GO)和硫酸为原料，在120 ℃水热条件下3 h成功合成了直径为10~20 nm，长度为300~400 nm的α-MnO2纳米棒。研究发现GO的引入降低了纳米棒的制备温度，缩短了反应时间。电化学测试结果表明，在1 mol·L-1 Na2SO4中性水系电解液中，该纳米棒表现出良好的电容性能，当扫描速率分别为2 mV·s-1和5 mV·s-1时，比电容分别为276 F·g-1和240 F·g-1；该纳米材料是一种潜在的电化学电容器电极材料。 | |
| 关键词: 二氧化锰 纳米棒 水热法 电化学电容器 | |
| 基金项目: | |
| Abstract: α-MnO2 nanorods were prepared by hydrothermal treatment of KMnO4, GO(graphite oxide)and sulfuric acid at 120 ℃ for 3 h. The nanorods have a diameter of 10~20 nm and a length of 300~400 nm. The introduce of GO reduces the preparation temperature of nanorods and shorten the reaction time. The electrochemical results indicate that α-MnO2 nanorods show fine capacitive behavior in neutral aqueous electrolyte (1 mol·L-1 Na2SO4), When the scan rates were 2 mV·s-1 and 5 mV·s-1, the specific capacitances were 276 F·g-1 and 240 F·g-1, respectively. This α-MnO2 nanorods is a potential electrode material for electrochemical capacitors. | |
| Keywords: manganese dioxide nanorods hydrothermal method electrochemical capacitors | |
| 摘要点击次数: 1896 | |
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| 薛兆辉,刘兆临,马方伟,孙丽萍,霍丽华,赵 辉.水热法合成α-MnO2纳米棒及其电化学性能[J].无机化学学报,2012,28(4):691-697. | |
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