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Analysing tortuosity for solid oxide fuel cell anode material : experiments and modeling
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dc.contributor.author | Zhang, Xiaoqiang | |
dc.contributor.author | Yang, Danan | |
dc.contributor.author | Xu, Min | |
dc.contributor.author | Naden, Aaron | |
dc.contributor.author | Espinoza-Andaluz, Mayken | |
dc.contributor.author | Li, Tingshuai | |
dc.contributor.author | Irvine, John T. S. | |
dc.contributor.author | Andersson, Martin | |
dc.date.accessioned | 2023-09-20T12:30:02Z | |
dc.date.available | 2023-09-20T12:30:02Z | |
dc.date.issued | 2023-09-19 | |
dc.identifier | 293969272 | |
dc.identifier | 0c1851a8-a3d2-42aa-871f-310524b22ea7 | |
dc.identifier | 85173222858 | |
dc.identifier.citation | Zhang , X , Yang , D , Xu , M , Naden , A , Espinoza-Andaluz , M , Li , T , Irvine , J T S & Andersson , M 2023 , ' Analysing tortuosity for solid oxide fuel cell anode material : experiments and modeling ' , Journal of The Electrochemical Society , vol. 170 , no. 9 . https://doi.org/10.1149/1945-7111/acf884 | en |
dc.identifier.issn | 0013-4651 | |
dc.identifier.other | Jisc: 1346940 | |
dc.identifier.other | publisher-id: jesacf884 | |
dc.identifier.other | manuscript: acf884 | |
dc.identifier.other | other: jes-109414.r2 | |
dc.identifier.other | ORCID: /0000-0002-8394-3359/work/142904447 | |
dc.identifier.other | ORCID: /0000-0003-2876-6991/work/142905097 | |
dc.identifier.uri | https://hdl.handle.net/10023/28430 | |
dc.description | X. Q. Zhang acknowledges the Chinese Scholarship Council (grant number: 201906070189). Great appreciation also from X. Q. Zhang and M. Andersson to the Royal Physiographic Society in Lund for sponsoring a 6 month research stay in the JTSI group at the School of Chemistry at the University of St. Andrews. A.B.N. and J.T.S.I. gratefully acknowledge support from the ESPRC through grants EP/L017008/1, EP/R023751/1 and EP/T019298/1. | en |
dc.description.abstract | Solid oxide fuel cells (SOFCs) directly convert chemical energy to electricity with high electrical efficiency. It involves gas transport through the porous electrode to the three-phase boundaries (TPB). The tortuosity of gas transport relates the bulk diffusion of gas in free space to the effective diffusion coefficient of gas migrating through a porous material. Therefore, determining the tortuosity is of great importance. This paper tests button SOFCs with NiO-YSZ as anode material followed by dual beam-focused ion beam scanning electron microscopy (FIB-SEM) to obtain 2D serial slice images. Based on processed 2D images and reconstructed 3D microstructure, the tortuosity is calculated using three approaches i.e., porosity-tortuosity correlations, voxel-based, and path-length-based approaches. The test results show that a decrease in Ni content in the anode greatly decreases the cell performance due to a decreased percolated electronic phase. The sample with low performance has high tortuosity. Different approaches vary regarding the tortuosity value and computational time. The path-length-based approach can achieve reasonable accuracy in a relatively short time but is only valid for using the longest path length. | |
dc.format.extent | 1377729 | |
dc.language.iso | eng | |
dc.relation.ispartof | Journal of The Electrochemical Society | en |
dc.subject | Reconstruction | en |
dc.subject | SOFC | en |
dc.subject | Anode | en |
dc.subject | CFD simulation | en |
dc.subject | Tortuosity | en |
dc.subject | DRT analysis | en |
dc.subject | NDAS | en |
dc.title | Analysing tortuosity for solid oxide fuel cell anode material : experiments and modeling | en |
dc.type | Journal article | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.institution | University of St Andrews. School of Chemistry | en |
dc.contributor.institution | University of St Andrews. Institute of Behavioural and Neural Sciences | en |
dc.contributor.institution | University of St Andrews. Centre for Energy Ethics | en |
dc.contributor.institution | University of St Andrews. Centre for Designer Quantum Materials | en |
dc.contributor.institution | University of St Andrews. EaSTCHEM | en |
dc.identifier.doi | 10.1149/1945-7111/acf884 | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | ep/l017008/1 | en |
dc.identifier.grantnumber | EP/R023751/1 | en |
dc.identifier.grantnumber | EP/T019298/1 | en |
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