CuCo₂O₄ nanomaterial was synthesized by cost effective, time saving combustion route and a composite material CuCo₂O₄/PANI was prepared by physical blending. X-ray diffractometer studies were used to characterize the structural properties of synthesized nanoparticles thereby confirming the appearance of cubic spinel phase with the crystallite size ranging from 10 to 40 nm. Rietveld refinement method was used to derive density of nanoparticles, unit cell volume and other parameters. Fourier transform infrared spectroscopy was used to confirm the functional groups as well as the presence of vibrations in the samples which is in accordance with XRD results. The distribution of electron density and chemical bonding were studied through maximum entropy method. The changes in these factors in pure and composite have demonstrated improved electrochemical behavior of the latter. The crystallite size and lattice strain were calculated by Williamson–Hall (W–H) analysis, and size-strain plot method (SSP) that was in correlation with that of Scherrer method. Findings from SSP method, Scherrer and HR-TEM results were well matched. The morphology of synthesized nanoparticles of pure and composite were examined through FE-SEM and HR-TEM images. The morphological changes have proved improved electrochemical capability of the composite. The morphological observations of FE-SEM and HRTEM were in good accordance. The crystalline property of the materials is confirmed from SAED patterns of HRTEM that matched well with the XRD study. The electrochemical characterization of the samples was carried out by CV and CP observations. The composite material CuCo₂O₄/PANI exhibited a higher maximum specific capacitance of 659 F/g at 5 mV/s scan rate in comparison with 515 F/g exhibited by pure CuCo₂O₄ as calculated from CV. The higher performance of the composite material is also evident by the electrochemical impedance study, as the resistance was lower than the pure. The ESR of the composite was 3.52 V and that of pure was 5.93 V, as obtained from the Nyquist plot. On the basis of outcome of the results, CuCo₂O₄/PANI nanocomposite displays better performance when compared to the pure CuCo₂O₄. This has been achieved by low cost, time saving and simple synthesis method.

中文翻译：

---

尖晶石结构的过渡二元金属氧化物和导电聚合物的纳米复合材料CuCo 2 O 4 /聚苯胺的超电容性能研究，特别是通过MEM进行键合和电子密度分布

通过具有成本效益，节省时间的燃烧路径和复合材料CuCo ₂ O ₄合成了CuCo ₂ O ₄纳米材料。/ PANI是通过物理混合制备的。X射线衍射仪研究用于表征合成的纳米粒子的结构特性，从而确认了晶粒尺寸为10至40 nm的立方尖晶石相的出现。Rietveld精炼方法用于得出纳米粒子的密度，单位细胞体积和其他参数。傅里叶变换红外光谱用于确认官能团以及样品中是否存在振动，这与XRD结果一致。通过最大熵方法研究了电子密度和化学键的分布。这些因素在纯和复合材料中的变化已证明后者的电化学行为得到改善。通过Williamson-Hall（W-H）分析计算出微晶尺寸和晶格应变，尺寸应变图法（SSP）与Scherrer方法相关。从SSP方法得到的结果，Scherrer和HR-TEM的结果都非常匹配。通过FE-SEM和HR-TEM图像检查了合成的纯纳米颗粒和复合纳米颗粒的形貌。形态变化已证明改善了复合材料的电化学性能。FE-SEM和HRTEM的形态学观察结果吻合良好。从HRTEM的SAED模式证实了材料的晶体性质，该模式与XRD研究非常吻合。通过CV和CP观察对样品进行电化学表征。复合材料CuCo 通过FE-SEM和HR-TEM图像检查了合成的纯纳米颗粒和复合纳米颗粒的形貌。形态变化已证明改善了复合材料的电化学性能。FE-SEM和HRTEM的形态学观察结果吻合良好。从HRTEM的SAED模式证实了材料的晶体性质，该模式与XRD研究非常吻合。通过CV和CP观察对样品进行电化学表征。复合材料CuCo 通过FE-SEM和HR-TEM图像检查了合成的纯纳米颗粒和复合纳米颗粒的形貌。形态变化已证明改善了复合材料的电化学性能。FE-SEM和HRTEM的形态学观察结果吻合良好。从HRTEM的SAED模式证实了材料的晶体性质，该模式与XRD研究非常吻合。通过CV和CP观察对样品进行电化学表征。复合材料CuCo 从HRTEM的SAED模式证实了材料的晶体性质，该模式与XRD研究非常吻合。通过CV和CP观察对样品进行电化学表征。复合材料CuCo 从HRTEM的SAED模式证实了材料的晶体性质，该模式与XRD研究非常吻合。通过CV和CP观察对样品进行电化学表征。复合材料CuCo₂ O ₄ / PANI在5 mV / s的扫描速率下显示出更高的最大比电容659 F / g，而从CV计算出的纯CuCo ₂ O _4则显示出515 F / g 。电化学阻抗研究也表明了复合材料的更高性能，因为其电阻低于纯电阻。根据奈奎斯特图，复合材料的ESR为3.52 V，纯ESR为5.93V。根据结果​​，与纯CuCo ₂ O ₄相比，CuCo ₂ O ₄ / PANI纳米复合材料表现出更好的性能。这是通过低成本，节省时间和简单的合成方法来实现的。