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Membranes
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Membrane Technology for Solid Oxide Fuel Cells
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Membrane Technology for Solid Oxide Fuel Cells

A special issue of Membranes (ISSN 2077-0375). This special issue belongs to the section "Membrane Applications".

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 3315

Special Issue Editor

Dr. Elena Kalinina

E-Mail Website
Guest Editor
1. Laboratory of Complex Electrophysic Investigations, Institute of Electrophysics, Ural Branch, Russian Academy of Sciences, Yekaterinburg 620016, Russia
2. Department of Physical and Inorganic Chemistry, Institute of Natural Sciences and Mathematics, Ural Federal University, Yekaterinburg 620002, Russia
Interests: solid oxide fuel cells (SOFC); thin-film technology; electrophoretic deposition (EPD); stable suspensions; nanoscale materials; electrochemical properties
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We would like to invite you to submit your works to a Special Issue “Membrane Technology for Solid Oxide Fuel Cells”. The purpose of this Special Issue is to present the advances in the development of technologies, formation methods and comprehensive research of ceramic membranes for electrochemical devices based on solid electrolytes. Authors are invited to submit their latest results; both original research papers and reviews are welcome.

Topics of interest include, but are not limited to: 

  • Promising materials for the production of ceramic membranes: oxide ion-conductive materials, proton-conductive materials, and their synthesis and characterization.
  • Development and applications of electrolyte membrane and oxygen permeation membrane.
  • Methods for obtaining promising nanostructured and nanocomposite electrolyte materials.
  • Development of methods for electrolytes thin layers deposition (oxide-ion or protonic conductors) on SOFC substrates (anode-, cathode-, electrolyte-, metal-supported) by physical vacuum deposition (magnetron deposition, pulsed laser deposition), chemical vapor deposition as well as electrochemical methods, ceramic and solution technologies, etc.

We look forward to receiving your contributions.

Dr. Elena Kalinina
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Membranes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • ceramic membranes
  • solid oxide fuel cells
  • solid oxide electrolyzers
  • electrolyte membrane
  • proton conductivity
  • oxygen permeation membrane
  • nanocomposite electrolyte materials

Published Papers (3 papers)

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Research

12 pages, 3973 KiB  
Article
Effect of Lu-Doping on Electrical Properties of Strontium Zirconate
by Anastasiya Pavlovich, Alexander Pankratov and Liliya Dunyushkina
Membranes 2023, 13(7), 663; https://doi.org/10.3390/membranes13070663 - 12 Jul 2023
Cited by 1 | Viewed by 883
Abstract
SrZrO3-based perovskites are promising proton-conducting membranes for use in fuel and electrolysis cells, sensors, hydrogen separators, etc., because they combine good proton conductivity with excellent chemical stability. In the present research, the effect of Lu-doping on microstructure, phase composition, and electrical [...] Read more.
SrZrO3-based perovskites are promising proton-conducting membranes for use in fuel and electrolysis cells, sensors, hydrogen separators, etc., because they combine good proton conductivity with excellent chemical stability. In the present research, the effect of Lu-doping on microstructure, phase composition, and electrical conductivity of SrZr1−xLuxO3−δ (x = 0–0.10) was investigated via X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy and impedance spectroscopy. Dense ceramic samples were obtained by the solution combustion synthesis and possessed an orthorhombic perovskite-type structure. The solubility limit of Lu was revealed to lie between x = 0.03 and 0.05. The conductivity of SrZr1−xLuxO3−δ increases strongly with the addition of Lu at x < 0.05 and just slightly changes at x > 0.05. The rise of the water vapor partial pressure results in an increase in the conductivity of SrZr1−xLuxO3−δ ceramics, which confirms their hydration ability and significant contribution of protonic defects to the charge transfer. The highest conductivity was achieved at x = 0.10 (10 mS cm–1 at 700 °C, wet air, pH2O = 0.61 kPa). The conductivity behavior was discussed in terms of the defect formation model, taking into account the improvement in ceramic sintering at high lutetium concentrations. Full article
(This article belongs to the Special Issue Membrane Technology for Solid Oxide Fuel Cells)
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11 pages, 12274 KiB  
Article
Development of Membrane Reactor Coupling Hydrogen and Syngas Production
by Alexey A. Markov, Oleg V. Merkulov and Alexey Yu. Suntsov
Membranes 2023, 13(7), 626; https://doi.org/10.3390/membranes13070626 - 28 Jun 2023
Viewed by 1002
Abstract
Simultaneous syngas and pure hydrogen production through partial oxidation of methane and water splitting, respectively, were demonstrated by using mixed ionic–electronic conductors. Tubular ceramic membranes prepared from La0.5Sr0.5FeO3 perovskite were successfully utilized in a 10 M lab scale [...] Read more.
Simultaneous syngas and pure hydrogen production through partial oxidation of methane and water splitting, respectively, were demonstrated by using mixed ionic–electronic conductors. Tubular ceramic membranes prepared from La0.5Sr0.5FeO3 perovskite were successfully utilized in a 10 M lab scale reactor by applying a radial arrangement. The supply of methane to the middle area of the reaction zone was shown to provide a uniform distribution of the chemical load along the tubes’ length. A steady flow of steam feeding the inner part of the membranes was used as oxidative media. A described configuration was found to be favorable to maintaining oxygen permeability values exceeding 1.1 mL∙cm–2∙min–1 and long-term stability of related functional characteristics. Methane’s partial oxidation reaction assisted by 10%Ni@Al2O3 catalyst proceeded with selectivity values above 90% and conversion of almost 100%. The transition from a laboratory model of a reactor operating on one tubular membrane to a ten-tube one resulted in no losses in the specific performance. The optimized supply of gaseous fuel opens up the possibility of scaling up the reaction zone and creating a promising prototype of a multitubular reaction zone with a simplified sealing procedure. Full article
(This article belongs to the Special Issue Membrane Technology for Solid Oxide Fuel Cells)
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13 pages, 8443 KiB  
Article
Long-Term Conductivity Stability of Electrolytic Membranes of Scandia Stabilized Zirconia Co-Doped with Ytterbia
by Dmitrii Agarkov, Mikhail Borik, Boris Komarov, Galina Korableva, Alexey Kulebyakin, Irina Kuritsyna, Elena Lomonova, Filipp Milovich, Valentina Myzina and Nataliya Tabachkova
Membranes 2023, 13(6), 586; https://doi.org/10.3390/membranes13060586 - 06 Jun 2023
Cited by 2 | Viewed by 1119
Abstract
The effect of high-temperature aging for 4800 h at a temperature of 1123 K on the crystal structure and the conductivity of (ZrO2)0.90(Sc2O3)0.09(Yb2O3)0.01 and (ZrO2)0.90 [...] Read more.
The effect of high-temperature aging for 4800 h at a temperature of 1123 K on the crystal structure and the conductivity of (ZrO2)0.90(Sc2O3)0.09(Yb2O3)0.01 and (ZrO2)0.90(Sc2O3)0.08(Yb2O3)0.02 single-crystal membranes were studied. Such membrane lifetime testing is critical to the operation of solid oxide fuel cells (SOFCs). The crystals were obtained by the method of directional crystallization of the melt in a cold crucible. The phase composition and structure of the membranes before and after aging were studied using X-ray diffraction and Raman spectroscopy. The conductivities of the samples were measured using the impedance spectroscopy technique. The (ZrO2)0.90(Sc2O3)0.09(Yb2O3)0.01 composition showed long-term conductivity stability (conductivity degradation not more than 4%). Long-term high-temperature aging of the (ZrO2)0.90(Sc2O3)0.08(Yb2O3)0.02 composition initiates the t″ → t′ phase transformation. In this case, a sharp decrease in conductivity of up to 55% was observed. The data obtained demonstrate a clear correlation between the specific conductivity and the change in the phase composition. The (ZrO2)0.90(Sc2O3)0.09(Yb2O3)0.01 composition can be considered a promising material for practical use as a solid electrolyte in SOFCs. Full article
(This article belongs to the Special Issue Membrane Technology for Solid Oxide Fuel Cells)
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