چكيده به لاتين
Solid oxide fuel cell (SOFC) is an energy conversion device that converts gas into electricity directly. The components consist of anode, electrolyte and cathode which have different properties and operate at high temperatures up to 1000 °C. SOFC requires a thin, robust, porous anode, dense electrolyte and porous cathode. Manufacturing of single cell using low compaction value and high diameter to thickness ratio is yet to be developed. The challenge of the higher diameter to thickness ratio is inhomogeneous density distribution which causes cracks during sintering. This research investigates the manufacturing of single cell using low compaction and high diameter to thickness ratio. Initially the anode was produced using ultrasonic (U/S) process and ball mill (BM) process. The materials for single cell are NiO/YSZ, YSZ, LSM/YSZ as anode, electrolyte and cathode, respectively. The cornstarch is used to create anode porosity while the material binder of the powder is polyvinyl butyral (PVB) to increase green compact strength. The consolidation of anode was done using a low compaction load of 16 MPa with a diameter of 40 mm. The electrolyte and layer were coated using dip coating technique and the cathode layer was manufactured using screen printing process. The sintering for single cell used a three step air sintering. The results demonstrated that the thin SOFC single cell was successfully obtained. The anode has a thickness of 1000 µm and the distribution of thickness for the electrolyte, and cathode were 5 µm and 10 µm. The cell diameter obtained was 36 mm.
