Electrolyte thickness control and its effect on electrolyte/anode dual-layer hollow fibres for micro-tubular solid oxide fuel cells

M.H.D. Othman, N. Droushiotis, Z. Wu, K. Kanawka, G. Kelsall, K. Li

Research output: Contribution to journalArticle

Abstract

As an effective effort in improving the performance of electrolyte/anode dual-layer hollow fibres (HFs) for micro-tubular solid oxide fuel cell (SOFC), high quality dual-layer HFs with controllable electrolyte layer thickness have been developed in this study by adjusting fabrication parameters of a single-step co-extrusion and co-sintering process. Uniform and defect-free outer electrolyte layer from 70 to 10 μm can be achieved when the extrusion rate is reduced from 5 to 0.5 ml min−1. Although the bending strength and the gas-tightness properties are reduced slightly with the decrease in electrolyte layer thickness, significant improvement in power output of the cell is achieved. Power density as high as 1.11 W cm−2 is obtained on the cell with the electrolyte layer of 10 μm in thickness, which is 114% higher than the one with an electrolyte layer of 65 μm.
Original languageEnglish
Pages (from-to)382-388
JournalJournal of Membrane Science
Volume365
Issue number1-2
DOIs
Publication statusPublished - 2010

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Thickness control
solid oxide fuel cells
Solid oxide fuel cells (SOFC)
Oxides
Electrolytes
hollow
Anodes
Electrodes
anodes
electrolytes
fibers
Fibers
Extrusion
tightness
flexural strength
Bending strength
cells
Sintering
Gases
radiant flux density

Cite this

Othman, M.H.D. ; Droushiotis, N. ; Wu, Z. ; Kanawka, K. ; Kelsall, G. ; Li, K. / Electrolyte thickness control and its effect on electrolyte/anode dual-layer hollow fibres for micro-tubular solid oxide fuel cells. In: Journal of Membrane Science. 2010 ; Vol. 365, No. 1-2. pp. 382-388.
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Electrolyte thickness control and its effect on electrolyte/anode dual-layer hollow fibres for micro-tubular solid oxide fuel cells. / Othman, M.H.D.; Droushiotis, N.; Wu, Z.; Kanawka, K.; Kelsall, G.; Li, K.

In: Journal of Membrane Science, Vol. 365, No. 1-2, 2010, p. 382-388.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Electrolyte thickness control and its effect on electrolyte/anode dual-layer hollow fibres for micro-tubular solid oxide fuel cells

AU - Othman, M.H.D.

AU - Droushiotis, N.

AU - Wu, Z.

AU - Kanawka, K.

AU - Kelsall, G.

AU - Li, K.

PY - 2010

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AB - As an effective effort in improving the performance of electrolyte/anode dual-layer hollow fibres (HFs) for micro-tubular solid oxide fuel cell (SOFC), high quality dual-layer HFs with controllable electrolyte layer thickness have been developed in this study by adjusting fabrication parameters of a single-step co-extrusion and co-sintering process. Uniform and defect-free outer electrolyte layer from 70 to 10 μm can be achieved when the extrusion rate is reduced from 5 to 0.5 ml min−1. Although the bending strength and the gas-tightness properties are reduced slightly with the decrease in electrolyte layer thickness, significant improvement in power output of the cell is achieved. Power density as high as 1.11 W cm−2 is obtained on the cell with the electrolyte layer of 10 μm in thickness, which is 114% higher than the one with an electrolyte layer of 65 μm.

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