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首页> 外文期刊>Journal of Energy Storage >MWCNTs/r-GO hybrid films fabricated by layer by layer assembly for supercapacitor electrodes
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MWCNTs/r-GO hybrid films fabricated by layer by layer assembly for supercapacitor electrodes

机译：逐层组装超级电容器电极的MWCNTs / r-GO混合膜

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This paper describes fabrication and characterization of a hybrid nanostructure comprised of multi-walled carbon nanotubes (MWCNTs) on reduced graphene oxide (r-GO) via layer by layer (LBL) assembly. This structure was prepared by vacuum filtration and heat-treated at 500 degrees C. The morphology of the sample was investigated by field emission electron microscopy (FE-SEM). The crystalline structure and chemical composition were characterized by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), respectively. Cyclic voltammetry (CV) curve of MWCNTs/r-GO hybrid film appeared close to that of an ideal double layer capacitor, in quasi-rectangular shape. The current density gradually increased with increasing voltage scanning rate, exceeding 20 A/g at a scan rate of 500 mV/s. Accordingly, the specific capacitance decreased with the increase of the voltage scanning rate as expected. Electrochemical performance of this hybrid film indicates that it can further improve supercapacitor electrodes.
机译：本文描述了混合纳米结构的制备和表征，该复合纳米结构是通过逐层（LBL）组装在还原氧化石墨烯（r-GO）上由多壁碳纳米管（MWCNT）组成的。通过真空过滤制备该结构，并在500℃下进行热处理。通过场发射电子显微镜（FE-SEM）研究样品的形态。分别通过X射线衍射（XRD）和X射线光电子能谱（XPS）表征了晶体结构和化学组成。 MWCNTs / r-GO杂化膜的循环伏安曲线（CV）接近于理想的双层电容器，呈准矩形。电流密度随着电压扫描速率的增加而逐渐增加，在500 mV / s的扫描速率下超过20 A / g。因此，比容随电压扫描速率的增加而降低。该混合膜的电化学性能表明它可以进一步改善超级电容器电极。

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