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以P123为表面活性剂,采用软模板法合成MnO2/CNT纳米复合材料。采用X射线衍射、热重和差热分析、傅立叶变换红外光谱分析和高分辨率透射电子显微镜对样品进行表征。结果表明,样品为弱结晶的α-MnO2,直径约10nm,长30?50nm,它们附着在碳纳米管壁上。样品的电化学性能通过组成Li-MnO2进行电池充放电和电化学阻抗测试(EIS),与纯二氧化锰相比,MnO2/CNT纳米复合材料具有更大的初始容量275.3mA·h/g和更好的倍率和循环性能。
P123 as surfactant and soft template synthesis of MnO2 / CNT nanocomposites. The samples were characterized by X-ray diffraction, TG-DTA, Fourier transform infrared spectroscopy and high-resolution transmission electron microscopy. The results show that the sample is a weakly crystalline α-MnO2 with a diameter of about 10nm and a length of 30-50nm, which are attached to the wall of the carbon nanotube. Electrochemical performance of the samples MnO2 / CNT nanocomposites have a larger initial capacity of 275.3 mA · h / g and a lower electrochemical impedance than that of pure manganese dioxide (MnO 2 / CNTs) by charge-discharge and electrochemical impedance spectroscopy (EIS) Better rate and cycle performance.