Performance test of a 5 kW solid oxide fuel cell system under high fuel utilization with industrial fuel gas feeding

Abstract

As the demand for green energy with high efficiency and low carbon dioxide (CO2) emissions has increased, solid oxide fuel cells (SOFCs) have been intensively developed in recent years. Integrated gasification fuel cells (IGFCs) in particular show potential for large-scale power generation to further increase system efficiency. Thus, for commercial application of IGFCs, it is important to design reliable multi-stacks for large systems that show long-term stability and practical fuel gas for application to industrial equipment. In this work, a test rig (of a 5 kW SOFC system, with syngas from industrial gasifiers as fuel) was fabricated and subjected to long-term tests under high fuel utilization to investigate its performance. The maximum steady output power of the system was 5700 W using hydrogen and 5660 W using syngas and the maximum steady electrical efficiency was 61.24% while the fuel utilization efficiency was 89.25%. The test lasted for more than 500 h as the fuel utilization efficiency was larger than 83%. The performances of each stack tower were almost identical at both the initial stage and after long-term operation. After 500 h operation, the performances of the stack towers decreased only slightly under lower current and showed almost no change under high current. These results demonstrate the reliability of the multi-stack design and the prospect of this SOFC power-generation system for further enlarging its application in a MWth demonstration.

Iron Oxide‐Carbon Black Promotional Effect on Palladium Nanoparticles Toward Ethylene Glycol Oxidation in Alkaline Medium: Experimental and Computational Studies

“…Furthermore, the high electron transfer resistance shows the blockage of the Pd active side by intermediates. [ 46 ]…”

“…Furthermore, the high electron transfer resistance shows the blockage of the Pd active side by intermediates. [46] 2.6. Computational Results DFT calculations confirmed the CO tolerance over Pd/Fe 2 O 3 by adsorbing a CO molecule over the surface Pd atom in the Pd/Fe 2 O 3 slab.…”

Special issue on integrated gasification fuel cell (IGFC) technology

“…The critical fuel cell technology about the performance test on a 5 kW SOFC system under high fuel utility with practical syngas feeding (Xu et al 2021), the operating parameters of the 10 kW SOFC-CHP system with syngas (Li et al 2021), and 10 kW molten carbonate fuel cell power generation systems are introduced (Lu et al 2021). In addition, the fabrication and performance of atmospheric plasma sprayed solid oxide fuel cells with liquid antimony anodes are researched (Jiang et al 2021).…”