Authors: L John Berchmans R Karthikeyan M Helan Sheela Berchmans V Ŝepelak K D Becker
Publish Date: 2011/06/08
Volume: 141, Issue: 10, Pages: 1451-1457
Abstract
The studies on the mechanochemical synthesis and electrochemical characterization of orthorhombic calcium ferrite CaFe2O4 are reported in this paper Stoichiometric mixtures of αFe2O3 and granulated Ca metal were used as the starting materials for the synthesis process The synthesized calcium ferrite was characterized by roomtemperature Mössbauer spectra XRD and TEM The electrochemical characterisation was carried out using cyclic voltammetry studies Mössbauer spectra provide the yield of the reaction information on the charge status the local symmetry and the magnetic state of the iron ions in the mechanosynthesized ferrite material XRD analysis of the CaFe2O4 compound reveals the orthorhombic crystal structure with an average crystalline size of about 28 nm TEM micrographs reveal the nanoparticles with irregular crystal morphology ranging from 8 to 30 nm The electrochemical studies clearly show that the calcium ferrite compound can act as an electrocatalyst for Oxygen Evolution Reaction OERThe authors sincerely thank for the financial support given by German Academic Exchange ServiceDAAD—Germany Department of Science and Technology DST New Delhi India and Council of Scientific and Industrial Research CSIR New Delhi India to carry out this study
Keywords: