Fabrication of Porous Structure with Scandia Stabilized Zirconia Electrolyte for Solid Oxide Fuel Cell

Abstract

This paper reports on the investigations on powder synthesis and fabrication of single cell using prepared powders. ScSZ powders for electrolyte of SOFC were synthesized using ultrasonic spray pyrolysis (USP) and Pechini method. The mean particle size diameter (d50) of the particle with the composition of ScMnSZ ((ZrO2)0.89(Sc2O3)0.1(MnO2)0.01) powders prepared by Pechini and USP method was about 0.35μm and 0.67μm. The electrical conductivity of sintered ScMnSZ sample prepared by Pechini and USP method was 0.112 S/cm and 0.091 S/cm at 800{degree sign}C, respectively. The performance of anode-supported single cell prepared using ScMnSZ electrolyte and LSM and Ni/YSZ electrodes was evaluated. The structure of the additional porous electrolyte layer was fabricated using polymer precursor as pore forming materials. The anode-supported cell with the additional porous electrolyte layer shows the maximum power density of 0.82 W/cm2 (0.55V) at 800{degree sign}C.