In-situ FTIR spectroscopy of the SOER under applied currents while flowing a 5% C3H8-5% CO2/Ar gas at 700 °C demonstrates that electrochemical current efficiently enhances the concentration of reaction intermediates. The SOER employed a symmetric cell based on the oxide-ion conductor La0.8Sr0.2Ga0.8Mg0.2O3δ (LSGM), sandwiched by FNR@FeOx-SFMNR. Results obtained at current densities ranging from 0 to 800 mA cm -2 presented in Figure . Distinct peaks between 1900 cm⁻¹ and 1200 cm⁻¹ correspond to carbonate species with various configurations. As the current density increased, a peak at 1487 cm⁻¹, attributed to symmetrically vibrated polydentate-carbonate species (p-CO3 2-) , and a peak at 1438 cm⁻¹, associated with bidentate-bicarbonate (b-HCO3 -) , emerged, both exhibiting increased intensity with rising current densities.