Document Type: Original Research Article

Authors

Department of Chemical Engineering, Nazarbayev University, Nur-Sultan, Kazakhstan

Abstract

In this investigation, lanthanum nickelate (La2NiO4 (LNO)) as a blended ionic and electronic conductor (MIEC) has been invaded into permeable structure of strontium doped lanthanum manganite (LSM) oxygen terminal of strong oxide cells. The impacts of temperature and penetration on the impedance spectra was researched under open circuit voltage (OCV) condition. X-beam diffraction (XRD) and field discharge checking electron magnifying lens (FE-SEM) results indicated arrangement of unadulterated ruddlesden popper period of LNO and uniform dissemination of LNO into the permeable LSM spine. To describe electrochemical conduct of unadulterated and LNO penetrated LSM oxygen anode, electrochemical impedance spectroscopy (EIS) estimation at temperature scope of 650-850 °C at interims of 50 °C was completed. Results indicated that penetration of 2M LNO, decreased polarization obstruction of unadulterated LSM by 90% (from 24.61 to 2.52 Ω.cm2) and 83% (from 1.36 to 0.23 Ω.cm2) at 650 °C and 850 °C, individually. Furthermore, determined actuation vitality of oxygen oxidation/decrease responses in both penetrated (124 kJ.mol-1) and noninfiltrated anodes (103 kJ.mol-1) additionally demonstrated upgrade of enactment wonders on LSM terminal. Along these lines, penetration of LNO into LSM spine by stretching out the response destinations to the heft of the terminal is a promising way to deal with accomplish better electrochemical execution.

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