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以纸纤维为基体,碳纳米管为导电剂,将分散好的碳纳米管与纸纤维混合均匀,然后进行抽滤制成碳纳米管导电纸。通过改变纸纤维与碳纳米管的比例制成不同碳纳米管含量的导电纸。利用扫描电子显微镜(SEM)、四探针电阻仪对其进行分析。以两电极体系方式检测超级电容器的性能,以1 mol/L AN/Et4NBF4为电解液,当纸纤维和碳纳米管的质量比为1∶1时,电容器比容量最大达到7.5 F/g。当纸纤维和碳纳米管的质量比为1∶3时,导电纸表面电阻下降到4.7Ω/sq,循环5 000次后,比容量保持1.8 F/g,电容量可以保留95%。
Taking paper fiber as a matrix and carbon nanotube as a conductive agent, the well-dispersed carbon nanotubes are uniformly mixed with the paper fiber, and then the carbon nanotube conductive paper is made by suction filtration. Conductive paper with different content of carbon nanotubes was made by changing the ratio of paper fiber and carbon nanotube. It was analyzed using a scanning electron microscope (SEM) and a four-probe resistance meter. The performance of the supercapacitor was tested by a two-electrode system. When the mass ratio of paper fiber to carbon nanotubes was 1: 1, the specific capacitance of the capacitor reached 7.5 F / g with 1 mol / L AN / Et4NBF4 as electrolyte. When the mass ratio of paper fiber to carbon nanotube is 1: 3, the surface resistivity of conductive paper is reduced to 4.7Ω / sq. After 500 cycles, the specific capacitance is maintained at 1.8 F / g, and the capacitance can be kept at 95%.