Preparation of Ni–YSZ Cermet through Reduction of NiO–YSZ Ceramic for SOFC Anode
IOP Conference Series: Materials Science and Engineering
Research on the synthesis of Nickel-Yttria Stabilized Zirconia (Ni-YSZ) cermet for Solid Oxide Fuel Cell (SOFC) anode has been performed. The preparation was carried out through the reduction process of the Nickel Oxide-Yttria stabilized Zirconia (NiO-YSZ) ceramic. NiO and YSZ were prepared separately, the NiO powder was prepared by calcination of CH 4 Ni 3 O 7 .xH 2 O at 500°C for 3 hours, while YSZ powder was prepared by calcination of 7mol% Y 2 O 3 and 93mol% ZrO 2 mixture at 1350°C for an
... at 1350°C for an hour. The NiO-YSZ ceramic preparation was carried outby mixing of YSZ and NiO powder with natural white starch by weight ratio NiO: YSZ: natural white starch = 4:6:1 followed by sintering at 1200°C for 4 hours. The completion of reduction process of NiO-YSZ ceramic was performed at 1000°C in flowing Argon (Ar) containing 10% Hydrogen (H 2 ) up to 4 hours. The characterisations include thermogravimetric analysis (TGA), XRD, SEM-EDX and Impedance Analyzer meter. The synthesised Ni-YSZ cermet at composition 33wt% Ni and 67wt% YSZ, shows relative density 70% and electrical conductivity 10 -2 S/cm at 700°C, it qualifies as anode for SOFC.