This review summarizes recent progress on dual-phase oxygen transport membranes. Existing challenges, research strategies and future application areas are discussed.
Users may download and print one copy of any publication from the public portal for the purpose of private study or research. You may not further distribute the material or use it for any profit-making activity or commercial gain You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.
The continuous production of LaCrO 3 particles (average edge size 639 nm, cube-shaped) by continuous hydrothermal flow synthesis using supercritical water is reported for the first time. By varying the reaction conditions, it was possible to suggest a reaction mechanism for the formation of this perovskite material. Moreover, dual-phase oxygen transport membranes were manufactured from the as-synthesized LaCrO 3 particles and (ZrO 2) 0.89 (Y 2 O 3) 0.01 (Sc 2 O 3) 0.10 (10Sc1YSZ), and oxygen permeation fluxes up to 5 × 10-8 mol cm-2 s-1 were measured on a 1-mm thick membrane.
Document Version Peer reviewed version Link back to DTU Orbit
Citation (APA):Pirou, S., Gurauskis, J., Gil, V., Søgaard, M., Hendriksen, P. V., Kaiser, A., ... Kiebach, W-R. (2016). Oxygen permeation flux through 10Sc1YSZ-MnCo2O4 asymmetric membranes prepared by two-step sintering. Fuel Processing Technology, 152, 192-199. https://doi.org/10.1016Technology, 152, 192-199. https://doi.org/10. /j.fuproc.2016 Oxygen permeation flux through 10Sc1YSZ-MnCo2O4 asymmetric membranes prepared by two- The composite membranes were prepared by tape casting, lamination and fired in a two-step sintering process. Microstructural analysis showed that a gastight thin membrane layer with the desired ratio of ionic/electronic conducting phases could be fabricated. Oxygen permeation fluxes across the 10Sc1YSZ/ MnCo2O4 (70/30 vol.%) composite membrane were measured from 750 to 940°C using air or pure oxygen as feed gases and N2 or CO2 as sweep gases. Fluxes up to 2.3 mlN min -1 cm -2 were obtained for the 7 micron thick membrane. A degradation test over 1730 hours showed an initial degradation of 21% during the first 1100 hours after which stable performance was achieved. The observed degradation is attributed to coarsening of the infiltrated catalyst.
The transportation sector is undergoing a technology shift from internal combustion engines to electric motors powered by secondary Li-based batteries. However, the limited range and long charging times of Li-ion batteries still hinder widespread adoption. This aspect is particularly true in the case of heavy freight and long-range transportation, where solid oxide fuel cells (SOFCs) offer an attractive alternative as they can provide high-efficiency and flexible fuel choices. However, the SOFC technology is mainly used for stationary applications owing to the high operating temperature, low volumetric power density and specific power, and poor robustness towards thermal cycling and mechanical vibrations of conventional ceramic-based cells. Here, we present a metal-based monolithic fuel cell design to overcome these issues. Cost-effective and scalable manufacturing processes are employed for fabrication, and only a single heat treatment is required, as opposed to multiple thermal treatments in conventional SOFC production. The design is optimised through three-dimensional multiphysics modelling, nanoparticle infiltration, and corrosion-mitigating treatments. The monolithic fuel cell stack shows a power density of 5.6 kW/L, thus, demonstrating the potential of SOFC technology for transport applications.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.