Abstract
This work focuses on the research of high efficiency and durability materials for use in protonic solid oxide fuel cells. The focused material on this stage of research is BaZr0.4Ce0.4Y0.1Gd0.1O3-δ (BZCYG); it attempts to join the good proton conductivity of barium cerate with the chemical stability of barium zirconate. Its synthesis is done via the modified Pechini method (1) using nitrates of the desired ions. The property characterization methods used were TGA/DSC, to determine the calcination temperature; dilatometry to assess the sintering behavior with and without sintering aid (NiO, as found in the literature (2)); X-ray diffraction (XRD) to make sure the desired phase was obtained; and Electrochemical Impedance Spectroscopy (EIS) to assess the protonic conductivity. The main problem faced while dealing with materials of this kind is their poor sinterability (3). The ideal composition was obtained, with single phase formation being identified through XRD.
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