Preparation and electrochemical properties of La1.0Sr1.0FeO4+δ as cathode material for intermediate temperature solid oxide fuel cells
Source abstract
Abstract
Cathodic material La1.0Sr1.0FeO4+δ for an intermediate temperature solid oxide fuel cell (IT-SOFC) was prepared via the glycine-nitrate process and characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM). XRD results showed that no reaction occurred between the La1.0Sr1.0FeO4+δ electrode and Sm0.2Ce0.8O1.9 (SDC) electrolyte at 1000 °C. SEM results showed that the electrode formed good contact with the SDC electrolyte after sintering at 1000 °C for 2 h. The electrochemical properties of La1.0Sr1.0FeO4+δ were measured using electrochemical impedance spectroscopy (EIS) and steady state polarization measurement. At 700 °C, the polarization resistance was about 3.90 Ωcm2, and the lowest polarization overpotential was 57 mV at a current density of 55 mA cm−2.
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Research context
OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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