Fabrication, Characterisation and Conductivity Measurement of a Perovskite-Type Proton Conductor

Selgin Al


Ceramic based materials from the ABO3 perovskite family, show both proton and oxide ion conductivity at intermediate temperatures depending on the gaseous environment. Due to these multi‐species transport features of them and their potential to be utilised as an electrolyte in solid oxide fuel cells operating at intermediate temperature, there has been lot of research focused on them and their properties. In this study, a perovskite type proton conductor was synthesised by using solid state reaction method. XRD (X‐ray diffraction) and EDXS (Energy dispersive X-ray spectroscopy)  characterisation techniques were utilised to determine crystal structure, phase purity and the elemental materials composition in powder form. The results were compared with ICDD (International Centre for Diffraction Data) database and displayed excellent match with standard perovskite structure. Also, the surface area measurement was performed via utilising the BET (Brunauer-Emmett-Teller) method. The conductivity measurement was carried out at the intermediate temperature (500-800°C) using AC impedance at different atmospheres. 

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