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通过Stille反应合成了3′,4′-亚乙基二氧-2,2′:5′,2″-三噻吩(TET),并以其作为单体,采用化学氧化原位聚合方法在碳纳米管(CNT)的表面包覆新型聚(3′,4′-亚乙基二氧-2,2′:5′,2″-三噻吩)(PTET),制备了PTET-CNT纳米复合材料.通过TEM、SEM和IR对其进行了表征,并利用循环伏安、交流阻抗、恒电流充放电等电化学测试方法,比较研究了复合材料以及碳纳米管在0.1 mol/L四乙基四氟硼酸铵(Et4NPF4)的乙腈溶液中的电化学行为.实验结果表明,在电流密度为3 mA/cm2时,PTET-CNT复合材料的比电容为86 F/g,比原碳纳米管比电容20 F/g提高了3.3倍.基于这种复合材料的电容器的能量密度达到2.02 Wh/kg.
3 ’, 4’-ethylenedioxy-2,2’: 5 ’, 2 “-trithiophene (TET) was synthesized by Stille reaction and was synthesized by chemical oxidation in situ polymerization A novel poly (3 ’, 4’-ethylenedioxy-2,2’: 5 ’, 2 ”-trithiophene) (PTET) was coated on the surface of nanotube (CNT) to prepare PTET-CNT nanocomposites The materials were characterized by TEM, SEM and IR, and the electrochemical tests such as cyclic voltammetry, alternating current impedance and constant current charge and discharge were used to investigate the electrochemical performance of the composites and carbon nanotubes in 0.1 mol / L tetraethyltetrakis The electrochemical behavior of the PTET-CNT composites was investigated. The results showed that the specific capacitance of the PTET-CNT composites was 86 F / g at a current density of 3 mA / cm2, which was higher than that of the original carbon nanotubes 20 F / g increased by 3.3 times. The energy density of the composite based capacitor reached 2.02 Wh / kg.