Lightweight Solid Oxide Cell Design for Ammonia-fed SOFC Systems

Conference · Fri May 19 04:00:00 EDT 2023

DOI:https://doi.org/10.1149/MA2023-0154323mtgabs· OSTI ID:2310902

Pike, Jenna ^[1]; Hafen, Tyler ^[1]; Larsen, Dennis ^[1]; Abernathy, Harry ^[2]; Guan, Bo ^[3]; Liu, Jian ^[2]; Le, Long ^[4]; Marina, Olga ^[4]; Elangovan, S. ^[1]

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1. OxEon Energy, LLC
2. NETL
3. NETL Site Support Contractor, National Energy Technology Laboratory
4. Pacific Northwest National Laboratory (PNNL)

A lightweight solid oxide fuel cell (SOFC) was developed by OxEon Energy that demonstrates the potential for increased specific power (kW/g) suitable for the requirements of electric Vertical Take-off and Landing (eVTOL) applications. Fuel flexibility was demonstrated in button cells and stacks using both legacy electrolyte-supported SOFC structure and the lightweight structure. Button cell and stack performance was nearly identical among hydrogen, ammonia, and reformed natural gas. Durability testing shows similarly stable performance in each fuel. A button cell test in ammonia at 800 °C using the lightweight cell structure measured area specific resistance (ASR) of 0.25 Ω-cm2 in H2/N2 and NH3 fuel feeds and showed a peak power density of 0.98 W/ cm2 in NH3 fuel. Short term hold at 0.7 V showed stable performance.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
• Sponsoring Organization: USDOE Office of Fossil Energy (FE)
• OSTI ID: 2310902
• Country of Publication: United States
• Language: English