In Situ Foaming of Porous (La _0.6 Sr _0.4 ) _0.98 (Co _0.2 Fe _0.8 ) O _3-δ (LSCF) Cathodes for Solid Oxide Fuel Cell Applications

Journal Article · Thu Jul 18 00:00:00 EDT 2013 · International Journal of Applied Ceramic Technology

DOI:https://doi.org/10.1111/ijac.12142· OSTI ID:1128518

Gandavarapu, Sodith ^[1]; Sabolsky, Edward ^[1]; Sabolsky, Katarzyna ^[2]; Gerdes, Kirk ^[3]

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1. US DOE-National Energy Technology Laboratory, 3610 Collins Ferry Road P.O.Box.880 Morgantown West Virginia 26507; Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown West Virginia 26506
2. Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown West Virginia 26506
3. US DOE-National Energy Technology Laboratory, 3610 Collins Ferry Road P.O.Box.880 Morgantown West Virginia 26507

A binder system containing polyurethane precursors was used to in situ foam (direct foam) a (La{sub 0.6}Sr{sub 0.4}){sub 0.98} (Co{sub 0.2} Fe{sub 0.8}) O{sub 3-{ delta}} (LSCF) composition for solid oxide fuel cell (SOFC) cathode applications. The relation between in situ foaming parameters on the final microstructure and electrochemical properties was characterized by microscopy and electrochemical impedance spectroscopy (EIS), respectively. The optimal porous cathode architecture was formed with a 70 vol% solids loading within a polymer precursor composition with a volume ratio of 8:4:1 (isocyanate: PEG: surfactant) in a terpineol-based ink vehicle. The resultant microstructure displayed a broad pore size distribution with highly elongated pore structure.

• Research Organization: National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States). In-house Research; National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FE0004000
• OSTI ID: 1128518
• Journal Information: International Journal of Applied Ceramic Technology, Vol. 12, Issue 1; ISSN 1546-542X
• Publisher: Wiley
• Country of Publication: United States
• Language: English

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