PERFORMANCE EVALUATION OF ANODE- AND ELECTROLYTE-SUPPORTED SINGLE CELL OF INTERMEDIATE TEMPERATURE SOLID OXIDE FUEL CELL (SOFC)

• Main Author: Yusupandi, Fauzi
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/42308
• Institution: Institut Teknologi Bandung

Indonesia’s electricity ratio has achieved 92,8% in 2017. However, east regions of Indonesia such as Papua and NTT still have low electricity ratio (<60%). Fuel cell can be an alternative technology of power plant for rural regions because it can be made in small capacity with high energy conversion. Solid oxide fuel cell (SOFC) is a fuel cell which uses solid electrolyte operated at 800 – 1000oC. High operating temperature makes complex materials and need high heat. Nowadays, Intermediate temperature SOFC operated at 500 – 800oC is being developed to lower operation cost. Utilization of Indonesia’s materials and reducing operating temperatur can reduce the cost of fabrication and operation. Performance of anode-supported SOFC cell based on CSZ produced by KPEEITB Laboratory need to improved because of low maximum power density and mechanical strength. In this study, SOFC cells was fabricated with planar-disc anode- and electrolyte-supported configuration based on Calcia Stabilized Zirconia (CSZ) dan Yttria Stabilized Zirconia (YSZ). This research focused on improving the performance of anode-supported SOFC cells based on CSZ. Moreover, anode-supported SOFC cells based on YSZ and electrolyte-supported based on CSZ and YSZ were also fabricated as comparison. The SOFC cells were tested using hydrogen as fuel and ambient air as oxidant at 600, 700 and 800oC. The result exhibited hardness of anode-supported cells based on CSZ increased from 0 to 1 mohs because sintering temperature increased from 1000oC for 1 hour to 1100oC for 3 hours and amount of pore former reduced from 15%wt to 10%wt. Moreover, hardness of anode-supported cells based on YSZ was 2 mohs. The highest maximum power densities of anode-supported cells based on CSZ and YSZ were 1,09 and 2,64 mW/cm2 at 800oC, respectively. Furthermore, the highest maximum power densities of electrolyte-supported cells based on CSZ and YSZ were 0,995 and 2,32 mW/cm2 at 800oC, respectively.