Fine-tuning thermal expansion characteristics of solid oxide fuel cell cathode via composite cathode fabrication
dc.contributor.author | Shah, N. | |
dc.contributor.author | Zhu, T. | |
dc.contributor.author | Feng, D. | |
dc.contributor.author | Xu, X. | |
dc.contributor.author | Liang, F. | |
dc.contributor.author | Wang, H. | |
dc.contributor.author | Zhu, Z. | |
dc.contributor.author | Ge, L. | |
dc.date.issued | 2024 | |
dc.description.abstract | Solid oxide fuel cells (SOFCs) offer promising prospects for sustainable electricity generation, attributed to high efficiency and fuel adaptability. However, their widespread application relies on three critical factors: performance, cost-effectiveness, and durability. Durability presents a significant hurdle; one key reason is the thermal expansion mismatch between cobalt-based cathodes and electrolytes, potentially leading to detachment at the cathode-electrolyte interface. In this study, we propose an approach to mitigate this challenge by fine-tuning the thermal expansion characteristics of the cathode. By tailoring lattice and chemical expansion, our composite cathode incorporates recognized materials like Ba0⋅5Sr0⋅5Co0⋅8Fe0⋅2O3-δ with Sm0.2Ce0⋅8O1.9 and the negative thermal expansion (NTE) material Y2W3O12. Through the design of composite materials, we achieve enhanced thermal cycling stability with only ~20 % area-specific resistance (ASR) increases after 40 harsh thermal cycles between 300–600 ◦C compared to pure BSCF with over 100 % increment. This optimization process effectively reduces the thermal expansion coefficient while preserving BSCF’s overall properties, offering a promising path for supporting SOFC durability and performance. | |
dc.description.statementofresponsibility | Nilam Shah, Tianjiu Zhu, Desheng Feng, Xiaoyong Xu, Fengli Liang, Hao Wang, Zhonghua Zhu, Lei Ge | |
dc.identifier.citation | Journal of Power Sources, 2024; 616:235143-1-235143-8 | |
dc.identifier.doi | 10.1016/j.jpowsour.2024.235143 | |
dc.identifier.issn | 0378-7753 | |
dc.identifier.issn | 0378-7753 | |
dc.identifier.orcid | Xu, X. [0000-0002-0149-815X] | |
dc.identifier.uri | https://hdl.handle.net/2440/143612 | |
dc.language.iso | en | |
dc.publisher | Elsevier | |
dc.relation.grant | http://purl.org/au-research/grants/arc/DP190101782 | |
dc.relation.grant | http://purl.org/au-research/grants/arc/FT220100166 | |
dc.rights | © 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). | |
dc.source.uri | http://dx.doi.org/10.1016/j.jpowsour.2024.235143 | |
dc.subject | Solid oxide fuel cells; Durability; Thermal expansion coefficient; Composite cathode | |
dc.title | Fine-tuning thermal expansion characteristics of solid oxide fuel cell cathode via composite cathode fabrication | |
dc.type | Journal article | |
pubs.publication-status | Published |
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