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.
