The properties and performance of micro-tubular (less than 2.0mm O.D.) anode suported solid oxide fuel cell (SOFC)

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-SDC tubular supports. Suitable aqueous slurry formulations of NiO-SDC for gel-casting were prepared using agarose, as a gelling agent, and sucrose, as a pore former. The subsequent NiO-SDC anode functional layer (AFL), the SDC electrolyte and the La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3Àd -SDC cathode were deposited by spray-coating. Afterwards, the electrochemical performance of different single cells was tested under humidified hydrogen as the fuel and air as the oxidant. The mechanical strength of the supporting tubes at different processing stages (green, pre-/ post-sintering, post-reduction, post-redox cycle conditions) were also determined to study the macromechanical failure behaviour of the cells. In addition, the mechanical strength of half-cells with different porosity, sintering temperature and wall thickness in the tubular supports was also determined. For this purpose, the modulus of rupture was measured by a three point bending test. This study shows that the electrochemical properties and mechanical strength are feasible for further development of anodesupported mT-SOFCs fabricated by gel-casting.

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“…[19][20][21]23,44 The cumulative distribution function can be rewritten by taking natural logarithm for two consecutive times as:…”

Section: Mechanical Characterizationmentioning

confidence: 99%

Microtubular solid oxide fuel cells fabricated by gel-casting: the role of supporting microstructure on the mechanical properties

Morales

Laguna‐Bercero

2017

RSC Adv.

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show abstract

“…[3]. NiO in the anode is assumed to be fully reduced to Ni and no shrinkage is considered during the reduction of NiO into Ni.…”

Section: Basic Model Parametersmentioning

confidence: 99%

Effects of electrode composition on the electrochemical performance and mechanical property of micro-tubular solid oxide fuel cell

Lin

2012

International Journal of Hydrogen Energy

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“…Based on their findings, the hollow fiber co-sintered at 1500 • C showed the most favorable properties and therefore, it was selected for the construction of MT-SOFC. However, the power output density was still lower than the ones produced by Suzuki's group 24,29 and Sammes's group 30,31 with similar electrolyte thickness (80 m) which were reported to be 1.29 W cm −2 at 600 • C and 1.31 W cm −2 at 550 • C, respectively. They suggested that several factors such as the thick electrolyte layer (around 80 m) and low porosity of the anode inner layer have affected the MT-SOFC performance.…”

Section: Multi-layer Extrusionmentioning

confidence: 69%

Recent fabrication techniques for micro-tubular solid oxide fuel cell support: A review

Jamil

Othman

Rahman

et al. 2015

Journal of the European Ceramic Society

159

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The properties and performance of micro-tubular (less than 2.0mm O.D.) anode suported solid oxide fuel cell (SOFC)

Cited by 57 publications

References 9 publications

Microtubular solid oxide fuel cells fabricated by gel-casting: the role of supporting microstructure on the mechanical properties

Microtubular solid oxide fuel cells fabricated by gel-casting: the role of supporting microstructure on the mechanical properties

Effects of electrode composition on the electrochemical performance and mechanical property of micro-tubular solid oxide fuel cell

Recent fabrication techniques for micro-tubular solid oxide fuel cell support: A review

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