This study proposes a facile cost-effective precipitation method to synthesis three-dimensional CuO/ZnO nanocubes structure to fabricate a cost-effective energy storage device. X-ray diffraction reveals that the synthesized CuO and ZnO has monoclinic and hexagonal structure without impurity. Composition and functional group are confirmed by FT-Raman studies and EDAX spectrum. High resolution Scanning Electron Microscope shows that ZnO substitution prompts spherical to cube. The optical indirect bandgap is found to be 1.77 and 1.93 eV for CuO and CuO/ZnO respectively. Electrochemical performance of three-dimensional structure of pseudocapacitive CuO/ZnO nanocubes is facilitated electron diffusion pathways and more active sites for electrochemical reactions. An electrochemical impedance study shows that the CuO/ZnO nanocubes have higher charge transfer rate. It reveals electrochemical performance with a specific capacitance of 208 F/g at a scan rate of 5 mV/s. Dielectric properties of CuO/ZnO nanocubes can be used in high-frequency device applications. The fluorescence spectrum validates that the infra-red emission from CuO and CuO/ZnO might be used in optoelectronic devices. This is the first ever report on infra-red emission and dielectric properties of CuO/ZnO nanocubes.

这项研究提出了一种简便的，具有成本效益的沉淀方法来合成三维CuO / ZnO纳米立方体结构，以制造一种具有成本效益的储能装置。X射线衍射表明，合成的CuO和ZnO具有单斜晶和六方结构，无杂质。通过FT-拉曼研究和EDAX光谱证实了组成和官能团。高分辨率扫描电子显微镜显示ZnO取代提示球形到立方体。发现CuO和CuO / ZnO的光学间接带隙分别为1.77和1.93eV。准电容性CuO / ZnO纳米立方体的三维结构的电化学性能有助于电子扩散途径和电化学反应的更多活性位。电化学阻抗研究表明，CuO / ZnO纳米立方体具有更高的电荷传输速率。它显示了在5 mV / s的扫描速率下比电容为208 F / g的电化学性能。CuO / ZnO纳米立方体的介电性能可用于高频设备应用。荧光光谱证实，来自CuO和CuO / ZnO的红外发射可用于光电器件。这是有关CuO / ZnO纳米立方体的红外发射和介电特性的第一份报告。