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Design of industrially scalable microtubular solid oxide fuel cells based on an extruded support

AuthorsMonzón, Hernán; Laguna-Bercero, M. A. ; Larrea, A. ; Arias, B. I.; Várez, A.; Levenfeld, B.
Issue Date2014
CitationInternational Journal of Hydrogen Energy 39(10): 5470-5476 (2014)
AbstractThe current work describes the adaptation of an existing lab-scale cell production method for an anode supported microtubular solid oxide fuel cell to an industrially ready and easily scalable method using extruded supports. For this purpose, Ni–YSZ (yttria stabilized zirconia) anode is firstly manufactured by Powder Extrusion Moulding (PEM). Feedstock composition, extruding parameters and binder removal procedure are adapted to obtain the tubular supports. The final conditions for this process were: feedstock solid load of 65 vol%; a combination of solvent debinding in heptane and thermal debinding at 600 °C. Subsequently, the YSZ electrolyte layer is deposited by dip coating and the sintering parameters are optimized to achieve a dense layer at 1500 °C during 2 h. For the cathode, an LSM (lanthanum strontium manganite)–YSZ layer with an active area of ∼1 cm2 is deposited by dip coating. Finally, the electrochemical performance of the cell is measured using pure humidified hydrogen as fuel. The measured power density of the cell at 0.5 V was 0.7 W cm−2 at 850 °C.
Publisher version (URL)http://dx.doi.org/10.1016/j.ijhydene.2014.01.010
Identifiersdoi: 10.1016/j.ijhydene.2014.01.010
issn: 0360-3199
Appears in Collections:(ICMA) Artículos
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