Lu, X;
Li, T;
Taiwo, OO;
Bailey, J;
Heenan, T;
Li, K;
Brett, DJL;
(2017)
Study of the tortuosity factors at multi-scale for a novel-structured SOFC anode.
Journal of Physics: Conference Series
, 849
(1)
012020.
10.1088/1742-6596/849/1/012020.
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Abstract
© Published under licence by IOP Publishing Ltd. Gas transport properties are closely related to the tortuosity of the pore network within porous materials. For the first time, this study explores a multi-scale imaging and modelling method to measure the tortuosity of an Solid Oxide Fuel Cell (SOFC) electrode material with pore sizes spanning over hundreds of orders of magnitude. This analysis is normally challenging using image-based techniques, as pores of different sizes may not be easily resolved at the same time using X-ray computed tomography (CT). In this study, a tubular SOFC anode, fabricated by a phase inversion technique, is used to illustrate this approach. A heat flux analogy is used to simulate mass transport and the results show that the embedded large-scale finger-like pores can significantly improve mass transport by providing less tortuous pathways.
| Type: | Article |
|---|---|
| Title: | Study of the tortuosity factors at multi-scale for a novel-structured SOFC anode |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1742-6596/849/1/012020 |
| Publisher version: | http://dx.doi.org/10.1088/1742-6596/849/1/012020 |
| Language: | English |
| Additional information: | Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1568378 |
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