Oxygen Transport Properties and Electrochemical Characterization of perovskites' Based Sr-PrxFel-x/ Sr-XuxFel-x Cathode Material Fuel Cell

Abstract

In this research, perovskite-based cathode materials Sr-PrxFe1-x / Sr-CuxFe1-x is prepared by Sol gel and solid-state technique where x=0.1, 0.2. The synthesized materials are characterized by FTIR, Raman Spectroscopy, EIS, Conductivity measurements and Fuel Cell performance. Raman spectra of Sr-PrxFe1-x / Sr-CuxFe1-x show vibrational mode and structure change in material. It shows that red and blue shifts occur into the material, red shift shows that material their wavelength got lengthened and bad gap is decreasing. On other hand blue shifts show that there is decline in wavelength due to the presence of heavy atoms in material. It shows its active modes B1g, A1g and A2g. FTIR showed the presence of functional groups i.e., N-H, O-H, C-H, C=O, C=C, C=N and presence of material i.e., SrO, Fe2O3/Fe3O4, CuO and PrO in prepared sample. Electrochemical impendence spectroscopy (EIS) describes that prepared materials demonstrate low ohmic resistance, thermal stability, and high electrical conductivity as temperature increases from 575 to 675oC. Fuel cell performance provides 0.086V OCV.