Sulfur poisoning recovery on a solid oxide fuel cell anode material through reversible segregation of nickel

Steiger, Patrick; Madi, Hossein; Mai, Andreas; Holzer, Lorenz; Van Herle, Jan; Kröcher, Oliver; Heel, Andre; Ferri, Davide

doi:10.1021/acs.chemmater.8b03669

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Sulfur poisoning recovery on a solid oxide fuel cell anode material through reversible segregation of nickel
Authors:	Steiger, Patrick Madi, Hossein Mai, Andreas Holzer, Lorenz Van Herle, Jan Kröcher, Oliver Heel, Andre Ferri, Davide
et. al:	No
DOI:	10.1021/acs.chemmater.8b03669
Published in:	Chemistry of Materials
Volume(Issue):	31
Issue:	3
Page(s):	748
Pages to:	758
Issue Date:	2019
Publisher / Ed. Institution:	American Chemical Society
ISSN:	0897-4756 1520-5002
Language:	English
Subject (DDC):	620.11: Engineering materials
Abstract:	The perovskite-type mixed oxide La0.3Sr0.55Ti0.95Ni0.05O3−δ (LSTN) is demonstrated to exhibit the remarkable property of structural regeneration, where Ni can be reversibly exsoluted from the host perovskite lattice resulting in a regenerable Ni catalyst for solid oxide fuel cell anode applications. Results of catalytic tests for the water gas shift reaction and electrochemical investigations on a button-sized fuel cell demonstrate the redox stability of LSTN, its potential application in solid oxide fuel cells, and its ability to recover catalytic activity completely after sulfur poisoning. Nickel segregation was characterized and quantified on powder samples by means of electron microscopy, X-ray diffraction, X-ray absorption spectroscopy, and temperature-programmed reduction–reoxidation cycles. Catalyst stability was much improved compared to impregnated Ni/La0.3Sr0.55TiO3−δ and Ni/Y0.08Zr0.92O2 anode materials. A full cell was tested under both open circuit voltage and polarized conditions, showing a stable cell voltage over redox cycles as well as periods of reverse potential and current overload. The area-specific resistance of the anode layer was as low as 0.58 Ω cm2 at 850 °C. This allows LSTN to be applied in redox-stable solid oxide fuel cell anodes and reversible segregation of Ni to be exploited for fast recovery from sulfur poisoning.
URI:	https://www.dora.lib4ri.ch/psi/islandora/object/psi:23399 https://digitalcollection.zhaw.ch/handle/11475/19424
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)
Appears in collections:	Publikationen School of Engineering

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Steiger, P., Madi, H., Mai, A., Holzer, L., Van Herle, J., Kröcher, O., Heel, A., & Ferri, D. (2019). Sulfur poisoning recovery on a solid oxide fuel cell anode material through reversible segregation of nickel. Chemistry of Materials, 31(3), 748–758. https://doi.org/10.1021/acs.chemmater.8b03669

Steiger, P. et al. (2019) ‘Sulfur poisoning recovery on a solid oxide fuel cell anode material through reversible segregation of nickel’, Chemistry of Materials, 31(3), pp. 748–758. Available at: https://doi.org/10.1021/acs.chemmater.8b03669.

P. Steiger et al., “Sulfur poisoning recovery on a solid oxide fuel cell anode material through reversible segregation of nickel,” Chemistry of Materials, vol. 31, no. 3, pp. 748–758, 2019, doi: 10.1021/acs.chemmater.8b03669.

STEIGER, Patrick, Hossein MADI, Andreas MAI, Lorenz HOLZER, Jan VAN HERLE, Oliver KRÖCHER, Andre HEEL und Davide FERRI, 2019. Sulfur poisoning recovery on a solid oxide fuel cell anode material through reversible segregation of nickel. Chemistry of Materials [online]. 2019. Bd. 31, Nr. 3, S. 748–758. DOI 10.1021/acs.chemmater.8b03669. Verfügbar unter: https://www.dora.lib4ri.ch/psi/islandora/object/psi:23399

Steiger, Patrick, Hossein Madi, Andreas Mai, Lorenz Holzer, Jan Van Herle, Oliver Kröcher, Andre Heel, and Davide Ferri. 2019. “Sulfur Poisoning Recovery on a Solid Oxide Fuel Cell Anode Material through Reversible Segregation of Nickel.” Chemistry of Materials 31 (3): 748–58. https://doi.org/10.1021/acs.chemmater.8b03669.

Steiger, Patrick, et al. “Sulfur Poisoning Recovery on a Solid Oxide Fuel Cell Anode Material through Reversible Segregation of Nickel.” Chemistry of Materials, vol. 31, no. 3, 2019, pp. 748–58, https://doi.org/10.1021/acs.chemmater.8b03669.