Abstract This paper describes the use of elemental combustion analysis for the simple quantification of multiwalled carbon nanotubes (MWCNT’s) inside a composite of polybithiophene (PBTh) matrix obtained by electrochemical polymerization. The obtained percentage in weight of MWCNT’s inside PBTh composites prepared was found between 15 % and 32 % depending on the different electropolymerization scan rates and CNTs proportion present at the polymerization solution. PBTh and PBTh/MWCNT composite properties were evaluated by in-situ electrochemical conductance method. The presence of the MWCNT’s causes a decrease in the hysteresis value (ΔEG ≈ 100 mV), and a faster charge exchange mainly in the charged-discharged transition, improving the conducting and electron transfer properties. Atomic force microscopy (AFM) scanning electronic microscopy (SEM) and X-ray diffraction (XRD) analysis let to distinguish unambiguously the presence of CNT’s and in the composite a nano fibrous structure was observed, which may explain the improvement of the electrochemical properties.

中文翻译：

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电化学聚合获得的PBTh基复合材料中MWCNTs的定量及其对导电性能和结构的影响

摘要 本文描述了使用元素燃烧分析对通过电化学聚合获得的聚联噻吩 (PBTh) 基体复合材料内的多壁碳纳米管 (MWCNT) 进行简单量化的用途。根据不同的电聚合扫描速率和聚合溶液中存在的 CNT 比例，所获得的 MWCNT 在制备的 PBTh 复合材料中的重量百分比介于 15% 和 32% 之间。通过原位电化学电导法评估PBTh和PBTh/MWCNT复合材料的性能。MWCNT 的存在导致滞后值降低（ΔEG ≈ 100 mV），并且主要在充放电转变中更快的电荷交换，从而改善了导电和电子转移特性。