The present study reports the findings about developing the energy storage resources following a green and economically viable method. Polythiophene (PTh) and its nanocomposites (PTh/CdSe) were synthesized using a chemical oxidative polymerization method. The FTIR spectra of the as-prepared composite confirm the presence of CdSe in PTh matrix. The XRD spectra suggest for the amorphous nature of native PTh which further changes into semicrystalline nature when CdSe was incorporated into it. PTh/CdSe nanocomposites showed both cubic and hexagonal phases, and the crystallite size was found to increase from 8 nm to 45 nm when CdSe was reinforced into the PTh matrix. Transmission electron microscopic images of pure PTh showed spherical morphology of the particles joined to each other through van der Waals forces. The doping of CdSe also results in appearance of needle-like nanostructures over PTh surfaces. These isolated needles have CdSe nanorod-like structures. Impedance data reveal that charge transfer resistance ( R ct ) of pure PTh is higher than that of the PTh/CdSe nanocomposites. The reduced charge transfer resistance ( R ct ) indicates that conductivity of nanocomposites is higher than that of the native one. When PTh was reinforced with the CdSe, they showed an increase in dielectric constant which is due to the alignment of polarization charges with increased frequency. This mechanism of polarization is helpful in increasing the charge storage capacity of the material. Thus, the observed results may open up doors of new avenues to design energy storage devices using conducting polymer/semiconductor nanocomposites.

中文翻译：

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CdSe 纳米棒增强聚噻吩复合材料在设计储能装置中的应用：形态学和介电行为研究

本研究报告了有关按照绿色和经济可行的方法开发储能资源的发现。使用化学氧化聚合方法合成聚噻吩 (PTh) 及其纳米复合材料 (PTh/CdSe)。所制备复合材料的 FTIR 光谱证实 PTh 基质中存在 CdSe。XRD 谱表明天然 PTh 的非晶性质，当 CdSe 掺入其中时，它会进一步转变为半结晶性质。PTh/CdSe 纳米复合材料显示出立方相和六方相，当 CdSe 被增强到 PTh 基体中时，发现晶粒尺寸从 8 nm 增加到 45 nm。纯 PTh 的透射电子显微图像显示通过范德华力相互连接的颗粒呈球形。CdSe 的掺杂还导致在 PTh 表面上出现针状纳米结构。这些孤立的针具有 CdSe 纳米棒状结构。阻抗数据显示纯 PTh 的电荷转移电阻 (R ct ) 高于 PTh/CdSe 纳米复合材料。降低的电荷转移电阻（R ct ）表明纳米复合材料的电导率高于天然复合材料的电导率。当 PTh 用 CdSe 增强时，它们表现出介电常数的增加，这是由于极化电荷随频率增加而排列。这种极化机制有助于提高材料的电荷存储容量。因此，观察到的结果可能为使用导电聚合物/半导体纳米复合材料设计储能装置开辟了新途径。