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Superior capacitive property of RuO2 nanoparticles on carbon nanotubes incorporated with nitrogen

机译:RuO2纳米粒子在掺氮碳纳米管上的优异电容性能

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摘要

Fast charging-discharging performances of well-dispersed RuO2 nanoparticles (NPs) on N-doped carbon nanotubes (CNTs) have been demonstrated. As regards the structural properties, the N 1s x-ray photoelectron spectroscopy spectrum shows two characteristic bonding peaks of N within CNTs. Cross-sectional scanning electron microscope images show that N-doped CNTs provide good support for uniform distribution of RuO2 NPs. As regards the capacitive behavior, N-doped CNTs covered with well-dispersed RuO2 NPs lead to a high charging-discharging property performed at the scan rate of 2000 mV s(-1). The role of N doping is to create preferential sites of CNTs for capturing RuO2 NPs. Such a fast sweep capability established by the N-incorporation method is very useful in supercapacitor applications.
机译:已经证明了分散良好的RuO2纳米颗粒(NPs)在N掺杂碳纳米管(CNTs)上的快速充放电性能。关于结构性质,N 1s X射线光电子能谱显示了CNT内N的两个特征性的结合峰。截面扫描电子显微镜图像显示,N掺杂的CNT为RuO2 NP的均匀分布提供了良好的支持。关于电容行为,覆盖有良好分散的RuO2 NP的N掺杂CNT导致以2000 mV s(-1)的扫描速率执行的高充放电性能。 N掺杂的作用是创建碳纳米管的优先位,以捕获RuO2 NP。通过N掺入方法建立的这种快速扫描能力在超级电容器应用中非常有用。

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