Abstract
The present work reported a facile and fast microwave irradiation technique for the synthesis of BiPO4 nanostructures at different microwave irradiation time (5, 10, & 15 min) with fixed power of 850 W. X-ray diffraction pattern (XRD), Fourier transform infrared spectroscopy (FTIR), and Raman spectroscopy divulges that the consolidated samples have a hexagonal phase with no polluting influence. Field emission scanning electron microscope (FESEM) examination revealed the development of non-uniform hexagonal and rectangular-like crystals. A significant decrease in optical band energy (Eg) was observed with increasing the microwave irradiation time. The electrochemical properties of the as-developed sample studied by Cyclic voltammetry (CV), Galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS) in a three-electrode arrangement with a 2 M KOH solution as an aqueous electrolyte. CV and GCD curve analysis demonstrate the Faradaic battery-type redox behavior for all the BiPO4 electrode samples, unlike the carbon, deployed material. As a battery-type behavior, the BP15 electrode exhibits excellent electrochemical performance with a significant specific capacity (~610 C g-1), superb, remarkable cycling life (~97% at 2 A g-1 over 1000 cycles), respectively.
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