Tailoring the Anisotropic Oxygen Transport Properties in Bulk Ceramic Membranes Based on a Ruddlesden–Popper Oxide by Applying Magnetic Fields

authored by: Giamper Escobar Cano, Motohide Matsuda, Zhijun Zhao, Frank Steinbach, Bernd Breidenstein, Hilke Petersen, Andreas Graff, Marc Widenmeyer, Anke Weidenkaff, Armin Feldhoff
Abstract: Textured Nd₂NiO₄₊_δ bulk ceramic membranes are fabricated via slip casting in a 0.9 T magnetic field generated by neodymium magnets. This process aligns the oxide grains with their easy-magnetization c-axis parallel to the applied magnetic field. Depending on the magnetic field's direction relative to the slip casting, grains orient either with their a,b-plane or c-axis parallel to the normal direction of the disk-shaped ceramic, thus aligning with the oxygen permeation direction. Without the magnetic field, a non-textured bulk membrane is formed. The microstructure and texture of the ceramic membranes are meticulously analyzed using advanced techniques, including X-ray diffraction, scanning and transmission electron microscopy, as well as related methods. Evaluation of the texturing effect on the oxygen permeation performance shows that the a,b-plane textured Nd₂NiO₄₊_δ bulk membrane achieves the highest oxygen permeation fluxes between 1023–1223 K. Additionally, it demonstrates impressive CO₂ stability, maintaining effective performance for at least 140 h due to preferential oxygen transport along the a,b-plane. These characteristics make Nd₂NiO₄₊_δ an auspicious material for industrial applications as an oxygen transport membrane, outperforming more susceptible perovskite-based materials. Magnetic alignment thus proves to be an effective method for achieving membrane texturing, enabling precise regulation of oxygen transport properties.
Organisation(s): Institute of Physical Chemistry and Electrochemistry
Institute of Production Engineering and Machine Tools
External Organisation(s): Kumamoto University
Fraunhofer Institute for Microstructure of Materials and Systems (IMWS)
Technische Universität Darmstadt
Type: Article
Journal: Advanced science
Volume: 12
ISSN: 2198-3844
Publication date: 27.02.2025
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Medicine (miscellaneous), General Chemical Engineering, General Materials Science, Biochemistry, Genetics and Molecular Biology (miscellaneous), General Engineering, General Physics and Astronomy
Electronic version(s): https://doi.org/10.1002/advs.202411251 (Access: Open)

BibTeX

@article{b1e07d36a0b84a128ce3c9a307fa960e,
title = "Tailoring the Anisotropic Oxygen Transport Properties in Bulk Ceramic Membranes Based on a Ruddlesden–Popper Oxide by Applying Magnetic Fields",
abstract = "Textured Nd2NiO4+δ bulk ceramic membranes are fabricated via slip casting in a 0.9 T magnetic field generated by neodymium magnets. This process aligns the oxide grains with their easy-magnetization c-axis parallel to the applied magnetic field. Depending on the magnetic field's direction relative to the slip casting, grains orient either with their a,b-plane or c-axis parallel to the normal direction of the disk-shaped ceramic, thus aligning with the oxygen permeation direction. Without the magnetic field, a non-textured bulk membrane is formed. The microstructure and texture of the ceramic membranes are meticulously analyzed using advanced techniques, including X-ray diffraction, scanning and transmission electron microscopy, as well as related methods. Evaluation of the texturing effect on the oxygen permeation performance shows that the a,b-plane textured Nd2NiO4+δ bulk membrane achieves the highest oxygen permeation fluxes between 1023–1223 K. Additionally, it demonstrates impressive CO₂ stability, maintaining effective performance for at least 140 h due to preferential oxygen transport along the a,b-plane. These characteristics make Nd2NiO4+δ an auspicious material for industrial applications as an oxygen transport membrane, outperforming more susceptible perovskite-based materials. Magnetic alignment thus proves to be an effective method for achieving membrane texturing, enabling precise regulation of oxygen transport properties.",
keywords = "anisotropy, magnetic orientation, neodymium nickel oxide, oxygen transport membranes, Ruddlesden–Popper oxides, textured ceramics",
author = "{Escobar Cano}, Giamper and Motohide Matsuda and Zhijun Zhao and Frank Steinbach and Bernd Breidenstein and Hilke Petersen and Andreas Graff and Marc Widenmeyer and Anke Weidenkaff and Armin Feldhoff",
note = "Publisher Copyright: {\textcopyright} 2025 The Author(s). Advanced Science published by Wiley-VCH GmbH.",
year = "2025",
month = feb,
day = "27",
doi = "10.1002/advs.202411251",
language = "English",
volume = "12",
journal = "Advanced science",
issn = "2198-3844",
publisher = "Wiley-VCH Verlag",
number = "12",
}