Investigation of Electrochemical and Mechanical Properties of Solid Oxide Fuel Cell Fabrication by 3d Printer

Nowadays, various methods have been introduced for the fabrication of solid oxide fuel cells (SOFC). In this research, 3D printing technology has been used to produce oxide fuel cells. First, a 3D printer was constructed that has the ability to print the slurry of anode, cathode and electrolyte layers with the desired thickness and speed. Then a suitable slurry consisting of NiO-YSZ materials was produced for the anode layer, YSZ for the electrolyte layer and LSM for the cathode, with suitable solvents and additives. After cell formation, drying and then sintering of the layers were performed. The composition and microstructure characterization of layers has been performed by XRD, SEM, Mapping, EDS. The I-V-P curve showed the maximum power is around 0.84 W / cm2 at 800 OC with constant oxygen. The impedance curve values under open-circuit voltage were 0.23 Ωcm-2 and 1.25 Ωcm-2 at high and low frequencies, respectively. The tensile experiments indicated values 111 GPa for Young modulus and 137 MPa and 120 MPa values for the fracture toughness and the yield strength, respectively.