Abstract The heterogeneity and the formation of interfaces between components of a nanocomposite material are important in enhancing the dielectric properties. Na[Fe(CN)4(C3H4N2)NO] 2H2O (SNP-d, the Imidazole derivative of Sodium Nitroprusside) embedded Polythiophene (PTh) nano rods have been prepared by chemical oxidative polymerization method, which is successfully characterized by FTIR, SEM and TEM measurements. Thermogravimetric analysis revealed enhanced thermal stability of PTh/SNP-d nanomaterial as compared to pure PTh. Apparent colossal dielectric constant (CDC) of around ∼2 × 103 in the higher frequency range (10 MHz) at room temperature has been observed. This is owing to the extrinsic (interfacial effects) in addition to intrinsic (bulk) contributions. Heterogeneity in the material paves way for Maxwell-Wagner interfacial effect which is justified by modulus and impedance spectroscopy. The material behaves a non-ideal layered dielectric consisting of a series combination of parallel RC elements. As the nanomaterial shows CDC, a high capacitive effect can therefore be displayed for energy storage applications.

中文翻译：

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用于储能应用的 SNP-d 嵌入 PTh 纳米棒的介电和阻抗光谱分析

摘要 纳米复合材料组分之间的异质性和界面的形成对于提高介电性能很重要。Na[Fe(CN)4(C3H4N2)NO]2H2O（SNP-d，硝普钠的咪唑衍生物）嵌入聚噻吩（PTh）纳米棒采用化学氧化聚合法制备，并通过FTIR、SEM和TEM 测量。热重分析表明，与纯 PTh 相比，PTh/SNP-d 纳米材料的热稳定性增强。已观察到室温下较高频率范围 (10 MHz) 内的表观巨介电常数 (CDC) 约为 2 × 103。这是由于除内在（大量）贡献之外的外在（界面效应）。材料中的异质性为 Maxwell-Wagner 界面效应铺平了道路，这通过模量和阻抗谱证明是合理的。该材料表现为非理想的分层电介质，由并联 RC 元件的串联组合组成。由于纳米材料显示 CDC，因此可以为能量存储应用显示高电容效应。