experimental investigation of a solid oxide fuel cell stack using direct reforming natural gas

In this study, a solid oxide fuel cell (sofc) stack has been successfully fabricated and tested by using direct natural gas. the main objective of this research was to achieve optimal long-term performance of the sofc stack without carbon deposition by using low-cost natural gas as a fuel. the stack con guration was improved by a new interconnect design and made of cost-effective raw materials. in this respect, the stack showed maximum power of 31 w while 33 a current was applied at a  ow rate of 1000 ccm for h2 (as fuel) and oxygen. then, humidi ed natural gas was employed as an internal reforming technique, which showed degradation of 1.4% after 24 h. maximum obtained power was 32 w under 33 a current at a  ow rate of 1000 ccm. after 48 h of operation, 34 w of power was achieved at the current of 38 a. therefore, the power was increased from 32 to 34 w after 48 h of operation in upper current. finally, a suitable sofc stack made of cost effective materials and using direct natural gas under appropriate conditions was fabricated and developed in this research.