Hydrothermal Approach of Spinel Copper Cobaltite (CuCo₂O₄) Nanostructures and Their Structural and Functional Properties

CuCo 2 O 4 nanoparticles were synthesized via facile hydrothermal route using oxalic as a precipitant, thermal decomposition of CuCo 2 O 4 precursor at 400°C. The structural studies from X-ray diffraction (XRD), Fourier transform infrared spectrometer, Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) disclose the predominant spinel crystal phase for copper cobaltite. The optical absorption spectra reveal two band gaps of 3.8 eV and 4.4 eV in the CuCo 2 O 4 nanoparticles. The cyclic voltammetry (CV) was used to assess the electrochemical characteristics of the resulting product in an organic electrolyte at −1.5–1.5 V under ambient conditions. On 22.4 nm CuCo 2 O 4 nanoparticles, a greater capacitance of 920 F/g at a scan rate of 5 mV/s was achieved.