Simple Co-precipitation Synthesis of Copper Molybdate Nanosheets and their Electrochemical Application
摘要
In the current work, CuMoO4 nanosheets (CuMoO4 NSs) were synthesized by using the co-precursor approach, and then structural, morphological, optical, and electrochemical properties of the synthesized CuMoO4 NSs were examined employing Fourier transform-infrared spectroscopy (FTIR), X-ray diffraction (XRD), UV–Vis diffuse reflectance spectroscopy (UV–DRS), thermogravimetric analysis (TGA), and field-emission scanning electron microscopy (FESEM). The XRD result depicted that the synthesized CuMoO4 NSs have an orthorhombic phase, and the average crystallite size of CuMoO4 NSs is about 19.57 nm. FESEM images confirmed the nanosheet-like structure of the samples. The CuMoO4 exhibited characteristic metal oxide bond vibrations as determined by FTIR spectroscopy. As a consequence, a more selective spectral region was therefore identified from UV–Visible spectra, and the band gap value was found to be 1.73 eV. For electrochemical performances, the prepared electrode material shows a high energy density of 85.12 Wh kg–1 and the power density of 449 W kg–1, a capacity retention of 88% after 5000 cycles of charge and discharge, and a specific capacitance of 681 F g–1 at 0.5 A for galvanostatic charge–discharge analysis.