| Summary: | 碩士 === 國立高雄應用科技大學 === 化學工程與材料工程系 === 98 === Nano-composite matreails synthesized by in-situ polymerization of aniline monomers in the presence of carbon materials or polyaniline (PANI) have been prepared and used as supercapacitor electrodes. Carbon materials included multiwalled carbon nanotubes (MWNT) and EB carbonized at 1400℃ (EB1400).
Through the TEM and SEM micrographs, one can observe the morphology of nanocomposite and the film surface image, respectively. And the four-point probe was used to measure the conductivity and cyclic voltammetry to characteristic the capacitance and cycle life of the nanocomposites. In the case of two electrode cells made of the nanocompistues, high specific capacitance values can be found ranged from 40 to 67 F/g.
It has been shown that carbon materials play the role of a perfect backbone to allow a homogenous distribution of PANI on them in the composite. It is well known that pure conducting polymers own poor mechanical property, hence, the carbon materials preserve the PANI active redox property from shrinkage and breaking by charge/discharge cycling. Apart of their excellent conducting and mechanical properties of the nanocomposites, the presence of carbon materials speeds up the charge transfer as well, which guarantees a high charge/discharge rate.
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