Sol gel thermolysis process for the synthesis of nano ZnMn2O4 by using PVA with combustion fuel and their electrochemical properties

In this paper we are demonstrating the synthesis of mixed transitional metal oxide ZnMn2O4 nano powder carried out by Sol-gel thermolysis process. The mixture of metal nitrates, PVA and urea have been used for ZnMn2O4 synthesis process. The obtained powder was characterized by XRD, PSA, and FE-SEM. The X-ray diffraction analysis revealed that the ZnMn2O4 nano powder has pure phase and tetragonal structure. Crystallite size was calculated by using Debye-Sherrer's and Williamson-Hall equations. The average crystallite size was around 14 nm. A particle size of 28 nm was obtained with particle size analyzer. The FESEM morphology studies indicate that ZnMn2O4 nano particles were coagulated with some amount of porosity. The electrochemical analysis of the synthesized ZnMn2O4 electrode showed specific capacity upto 603 mAh/g at 5 mV/s. (c) 2018 Elsevier Ltd. All rights reserved.