Comparative study on the performance of co-extruded hollow fiber solid oxide fuel cell fuelled with hydrogen and methane

In this study, the effects of two fuel types, i.e., hydrogen and methane on the electrochemical performance of the co-extruded triple layer hollow fiber, were systemically studied. The triple layer hollow fiber consisted of electrolyte/active functional layer (AFL)/anode was fabricated by single-ste...

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Bibliographic Details
Published in:Journal of solid state electrochemistry 2019-07, Vol.23 (7), p.2195-2203
Main Authors: Mohamed, Mohd Hilmi, Othman, Mohd Hafiz Dzarfan, Hubadillah, Siti Khadijah, Rahman, Mukhlis A., Jaafar, Juhana, Ismail, Ahmad Fauzi
Format: Article
Language:English
Subjects:
Analytical Chemistry
Anodes
Bend tests
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Coextrusion
Comparative studies
Condensed Matter Physics
Electrochemical analysis
Electrochemistry
Energy Storage
Extrusion
Gas tightness
Hydrogen
Methane fuels
Morphology
Open circuit voltage
Original Paper
Performance tests
Physical Chemistry
Scanning electron microscopy
Sintering
Solid oxide fuel cells
Tightness
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Summary:In this study, the effects of two fuel types, i.e., hydrogen and methane on the electrochemical performance of the co-extruded triple layer hollow fiber, were systemically studied. The triple layer hollow fiber consisted of electrolyte/active functional layer (AFL)/anode was fabricated by single-step phase-inversion-based co-extrusion technique prior to the sintering process at temperature range of 1400 to 1500 °C. The hollow fibers were characterized by three-point bending test, gas tightness test, and scanning electron microscope (SEM). The electrochemical performance test was carried out at temperatures of 700–800 °C by flowing fuel at 20 ml/min. Based on the results attained, the gas tightness and bending test are improved by the increase of sintering temperature. SEM results show that the finger-like morphology length around 100 μm is obtained. In addition, the AFL layer located in the middle layer of the hollow fiber has its own finger like which forms sandwich-like structure with the anode layer. The open circuit voltage is recorded at 1.05 V with the highest power density obtained at 0.6 W cm −2 by using hydrogen. By changing the fuel into methane gas, the highest power density is achieved at 0.8 W cm −2 . This is due to the methane that carries more hydrogen molecule. This indicates that the methane fuel can be utilized in hollow fiber SOFC systems.
ISSN:1432-8488
1433-0768
DOI:10.1007/s10008-019-04314-5