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将SWNTs分散于Nafion乙醇溶液中,成功制备了SWNTs/Nafion膜,从结构和导电性方面对碳纳米管掺杂Nafion聚合物导电膜进行了研究,通过扫描电镜(SEM)、红外光谱(IR)和拉曼光谱测试对碳纳米管掺杂Nafion聚合物导电膜进行结构表征,结果表明SWNTs/Nafion复合膜中Nafion更容易与纤维素膜紧密结合;利用循环伏安法测试了SWNTs/Nafion聚合物膜的导电性质,电导率由3.155×10-9S/m变化到5.626×10-7S/m,提高了两个数量级,且CV曲线有明显的电容环,这是因为SWNTs/Nafion样品膜中存在赝电容,同时由于SWNTs掺杂在Nafion中内形成三维互穿结构导电网络,这两点原因使得样品电导率得到明显提高。
The SWNTs / Nafion membrane was successfully prepared by dispersing the SWNTs in Nafion ethanol solution. The Nafion polymer conductive films doped with carbon nanotubes were studied from the aspects of structure and electrical conductivity. Scanning electron microscopy (SEM), infrared spectroscopy (IR) And Raman spectroscopy were used to characterize the structure of carbon nanotube doped Nafion polymer. The results showed that Nafion in SWNTs / Nafion composite membrane was more likely to bind tightly to the cellulose membrane. Cyclic voltammetry was used to investigate the effect of SWNTs / Nafion polymer The conductivity of the films changed from 3.155 × 10-9S / m to 5.626 × 10-7S / m, which was increased by two orders of magnitude. The CV curve showed a clear capacitive ring because of the presence of SWNTs / Nafion sample films Pseudocapacitance. At the same time, the three-dimensional interpenetrating network structure is formed due to the doping of SWNTs in Nafion, which leads to the obvious increase of the conductivity of the sample.