Abstract
The high performance anode supported single cells for ammonia fueled SOFCs comprising of BSCF (Ba0.5Sr0.5Co0.8Fe0.2O3- δ)//BCY//NiO-BCY have been fabricated by co-pressing for depositing 50 µm thin film electrolytes. The electrolytes prepared by co-pressing technology were fully dense with no formation of secondary phases and observed to be crack-free. The electrochemical performance of single cells was characterized at the temperature 600-700 {degree sign}C under humid 75% H2 in N2 (3% H2O) similar to cracked ammonia as the fuel gas and air as the oxidant gas at a gas flow rate of 100 mL min-1. The open circuit voltages were around 1.02 V at 600 {degree sign}C indicating little gas leakage or mixed conduction through the electrolyte. Maximum power densities of 220, 190 and 160 mW cm- 2 from single cells were obtained at 700, 650 and 600 {degree sign}C, respectively under humid 75% H2 in N2 (3% H2O) and air.
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