Synthesis and Impedance studies of potassium bismuth tri phosphate electrolyte

The K3Bi2(PO4)(3) (abbreviated as KBPO3) ceramic materials is prepared by solid state reaction method. The Calcination is done at 600 degrees C temperature for 20 hours with intermediate grinding. The structural property of calcined sample is studied by X - ray diffraction technique at room temperature in the 2 theta range from 10 degrees to 80 degrees. The phase of the compositions is compared with reported data for ICSD #409582 for KBPO3. The XRD results of sample show no secondary peaks and it confirms the formation of single phase. The pellets are sintered at temperature 620 degrees C respectively for 3 hours. The surface morphology of the sample is studied with Scanning electron Microscopy. The densities of the sintered ceramics are measured by Archimedes Principle. The temperature and frequency variation impedance of KBPO3 is studied. The impedance of the sample shows temperature dependent non-Debye relaxation. (C) 2018 Elsevier Ltd. All rights reserved.