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通过化学处理方式分别对碳纳米管进行酸化和胺化改性,处理后的碳纳米管溶于水进行超声、剪切等步骤制成相应的分散液并进行分散性对比。然后将该分散液与纸浆混合,经高速剪切制成可运用于电子器件的碳纳米管导电纸。利用红外光谱仪、扫描电子显微镜、矢量网络分析仪对其进行表征。结果表明,该实验方法能成功改性碳纳米管,在其末端引入羧基或酰胺基,经过酸化后的碳纳米管具有较好的分散性,能保持25 d才沉淀完全,酸化后的碳纳米管导电纸与胺化后的导电纸都具有良好的屏蔽性能,将该导电纸用于电池集流体代替传统的石墨时,最多可以提高电池的50.56%电压放电时间,为改善电池的放电性能提供了新的依据。
Carbon nanotubes were modified by chemical treatment and amination respectively by chemical treatment. The treated carbon nanotubes were dissolved in water and subjected to ultrasonic and shearing steps to prepare corresponding dispersions and conduct dispersive comparison. The dispersion is then mixed with the pulp and sheared to high speed for carbon nanotube conductive paper that can be used in electronic devices. It was characterized by infrared spectroscopy, scanning electron microscopy and vector network analyzer. The results show that the experimental method can successfully modify the carbon nanotubes, carboxyl or amido groups introduced at the ends of the carbon nanotubes, the acidified carbon nanotubes have good dispersion, can be maintained for 25 days before precipitation completely, the acidified carbon nano Conductive paper and amination after the conductive paper has good shielding properties of the conductive paper used in the battery instead of the traditional graphite current collector can be up to 50.56% of the battery voltage discharge time to improve the discharge performance of the battery A new basis.