Fuel cells have become of great interest as a potential economical, clean and efficient candidate for alternative and environmentally friendly power generation services. Solid Oxide Fuel Cell (SOFC) is a high temperature fuel cell, dealing with generation of power as well as heat. Up to now many studies have been made to replace platinum, Pt, with a new cathode catalyst for intermediate temperature-solid oxide fuel cells (IT-SOFC) (500°C&lt;T) range but research has become inadequate. There are two important aspects about SOFC cathodes, the effect of different cathode materials on the electrochemical performance of the electrode and the kinetics of the oxygen reduction reaction (ORR). Understanding in these concepts would lead to a better understanding and further improvements of SOFC systems.<br/><br/>The production and evaluation of novel and supreme cathode electrodes used in IT-SOFC is aimed to employ cheaper metals (Ti, Fe, Co, Cr, Mn, V, B and Gd) by using superior properties of perovskite structure. The reaction of reduction of oxygen on metal/metal oxide surface is achieved within the complicated and multi-step mechanism. The completion of these steps at the same time depends on the nature of oxide ion carrier in cathode, atomic formation in crystal structure and microstructure of cathode materials. Due to these reasons, the production of intended novel and superior cathode materials is achieved by the systematic doping and implementation of different metals (Ti, Fe, Co, Cr, Mn, V, B and Gd) to perovskite crystal structure. Of the three cathodes synthesized, the LV05SC on YSZ showed the highest are area specific resistance. Hence, it is a better cathode material candidate.

Vanadium doped intermediate temperature solid oxide fuel cell (IT-SOFC) cathodes

2019 Fall National Meeting

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