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Title: The effect of anode support on the electrochemical performance of microtubular solid oxide fuel cells fabricated by gel-casting
Author: Morales Comas, Miguel
Laguna Bercero, Miguel A.
Navarro, M. Elena
Espiell Álvarez, Ferran
Segarra Rubí, Mercè
Keywords: Electroquímica
Ciència dels materials
Materials science
Issue Date: 16-Apr-2015
Publisher: Royal Society of Chemistry
Abstract: Different cell configurations of anode-supported microtubular solid oxide fuel cells (mT-SOFCs) using samaria-doped ceria (SDC) as the electrolyte were fabricated. Several cells were processed varying the porosity and wall thickness (outer diameter) of NiO<br>SDC tubular supports. Suitable aqueous slurry formulations of NiO<br>SDC for gel-casting were prepared using agarose, as a gelling agent, and sucrose, as a pore former. The subsequent NiO<br>SDC anode functional layer (AFL), the SDC electrolyte and the La0.6Sr0.4Co0.2Fe0.8O3-d<br>SDC cathode were deposited by spray-coating. Pre-sintering temperatures of the supports were optimized from linear shrinkage curves, thus obtaining after co-sintering, a dense electrolyte without anode-electrolyte delamination. Electrochemical characterization of mT-SOFC cells fabricated by agarose gel-casting is reported by the first time. The cell with a support of 2.6 mm diameter, 380 mm wall thickness, an active area of 1 cm2 and added porosity, using 10 wt% sucrose, achieved a maximum power density of about 400 mW cm2 at 650 ºC.
Note: Versió postprint del document publicat a:
It is part of: RSC Advances, 2015, vol. 5, num. 49, p. 39350-39357
Related resource:
ISSN: 2046-2069
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)
Articles publicats en revistes (Institut de Nanociència i Nanotecnologia (IN2UB))

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