| Publication type: | Conference paper |
| Type of review: | Peer review (abstract) |
| Title: | SMART catalyst based on doped Sr-titanite for advanced SOFC anodes |
| Authors: | Burnat, Dariusz Kontic, Roman Holzer, Lorenz Schuler, Andreas Mai, Andreas Heel, Andre |
| Proceedings: | Proceedings of 12th European SOFC & SOE Forum 2016 |
| Page(s): | 113 |
| Pages to: | 120 |
| Conference details: | 12th European SOFC & SOE Forum, Lucerne, 5-8 July 2016 |
| Issue Date: | 2016 |
| ISBN: | 978-3-905592-21-4 |
| Language: | English |
| Subjects: | Anodes; Perovskite; Smart Material; SOFC |
| Subject (DDC): | 621.3: Electrical, communications, control engineering |
| Abstract: | To increase the durability of SOFC stacks, robust anodes with high catalytic performance and redox tolerance are needed. Among all alternatives, La-doped strontium titanate (LST) materials were recognized to possess good electronic conductivity and high tolerance to redox cycles1,2, but modest electro-catalytic activity, which can be enhanced in conjunction with an appropriate catalyst. Nevertheless, anodes with conventional composite microstructures (e.g. LST with equally sized Ni-phase) are still prone to sulphur poisoning, coking and to coalescence of the Ni phase over time. The authors present recent advances of a SMART material concept with a catalytic and microstructural self-regeneration effect, in which nanosized nickel catalyst is repeatedly exsolved from and incorporated back into the LST perovskite host structure. Ni-nanoparticles are exsolved from LST at low pO2 (i.e. at SOFC anode conditions) and the Ni is re-incorporated hat high pO2. Since titanates are highly tolerant to changes of the oxygen partial pressure, application of controlled redox cycles could therefore lead to the burn-off of harmful sulphides and/or carbon deposits and at the same time the incorporation-exsolution cycles also help circumventing the catalysts coarsening problem. We present the concept in which Ni-doped LST is applied to repetitively exsolute and re-incorporate the Ni catalyst, hence offering a microstructural self-regeneration mechanism. |
| Further description: | B1403 |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/8921 |
| Fulltext version: | Published version |
| License (according to publishing contract): | Licence according to publishing contract |
| Departement: | School of Engineering |
| Organisational Unit: | Institute of Computational Physics (ICP) Institute of Materials and Process Engineering (IMPE) |
| Published as part of the ZHAW project: | SERAN - Self-Regenerating Anodes: Durability Improvement of SOFC Technology by Novel Smart Materials with Sulphur Tolerance |
| Appears in collections: | Publikationen School of Engineering |
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Burnat, D., Kontic, R., Holzer, L., Schuler, A., Mai, A., & Heel, A. (2016). SMART catalyst based on doped Sr-titanite for advanced SOFC anodes [Conference paper]. Proceedings of 12th European SOFC & SOE Forum 2016, 113–120.
Burnat, D. et al. (2016) ‘SMART catalyst based on doped Sr-titanite for advanced SOFC anodes’, in Proceedings of 12th European SOFC & SOE Forum 2016, pp. 113–120.
D. Burnat, R. Kontic, L. Holzer, A. Schuler, A. Mai, and A. Heel, “SMART catalyst based on doped Sr-titanite for advanced SOFC anodes,” in Proceedings of 12th European SOFC & SOE Forum 2016, 2016, pp. 113–120.
BURNAT, Dariusz, Roman KONTIC, Lorenz HOLZER, Andreas SCHULER, Andreas MAI und Andre HEEL, 2016. SMART catalyst based on doped Sr-titanite for advanced SOFC anodes. In: Proceedings of 12th European SOFC & SOE Forum 2016. Conference paper. 2016. S. 113–120. ISBN 978-3-905592-21-4
Burnat, Dariusz, Roman Kontic, Lorenz Holzer, Andreas Schuler, Andreas Mai, and Andre Heel. 2016. “SMART Catalyst Based on Doped Sr-Titanite for Advanced SOFC Anodes.” Conference paper. In Proceedings of 12th European SOFC & SOE Forum 2016, 113–20.
Burnat, Dariusz, et al. “SMART Catalyst Based on Doped Sr-Titanite for Advanced SOFC Anodes.” Proceedings of 12th European SOFC & SOE Forum 2016, 2016, pp. 113–20.
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