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Development of supercapacitors based on carbon nanotubes 总被引:1,自引:0,他引:1
Block-type electrodes made of carbon nanotubes were fabricated by different processes. The volumetric specific capacitance based on such electrodes reached 107 F/cm3, which proves carbon nanotubes to be ideal candidate materials for supercapacitors. The composite electrodes consisting of carbon nanotubes and RuO2 ·xH2O were developed by the deposition of RuO2 on the surface of carbon nanotubes. Supercapacitors based on the composite electrodes show much higher specific capacitance than those based on pure carbon nanotube ones. A specific capacitance of 600 F/g can be achieved when the weight percent of RuO2· xH2O in the composite electrodes reaches 75% . In addition , supercapacitors based on the composite electrodes show both high energy density and high power density characteristics. 相似文献
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采用直接熔化方法合成铁-巴基管复合材料,研究了复合材料淬火处理后的硬度及显微组织变化。实验结果表明:在适当的淬火工艺下,铁-巴基管复合材料硬度可达HRc65,而且比相同工艺下普通铁碳合金的硬度平均高出5~10HRc.显微组织分析发现淬火马氏体中有规则晶体外形的白亮相存在,波谱分析结果证明它们是贫铁相。差热分析结果表明直到1400℃的高温,巴基管没有相变。高分辨透射电镜观察到复合材料中弥散分布着巴基管,巴基管能在复合材料中稳定存在而起强化作用。 相似文献
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