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Special Issue "Membrane Technology for Sustainable Future—Solid Oxide Fuel Cells"

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

Deadline for manuscript submissions: closed (27 June 2023) | Viewed by 6754

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Special Issue Editors

Prof. Dr. Vladislav A. Sadykov

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Guest Editor

"1. Chief Research Scientist, Department of Heterogeneos Catalysis, Boreskov Institute of Catalysis, Novosibirsk 630090, Russia
2. Faculty of Natural Sciences, Novosibirsk State University, Novosibirsk 630090, Russia
Interests: heterogeneous catalysis of red-ox processes for the energy production; advanced technologies of nanophase and nanocomposite materials synthesis; their transport properties characterization; design of structured functionally graded materials for solid oxide fuel cells, monolithic catalysts for fuels transformation into syngas and hydrogen, oxygen/hydrogen separation membranes for catalytic reactors of syngas/hydrogen generation
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Prof. Dr. Christos Argirusis

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Director, Laboratory of Inorganic Materials Technology, School of Chemical Engineering, National Technical University of Athens, Athens, Greece
Interests: materials for energy applications; solid oxide fuel cells; microbial fuel cells; composite materials at nano-level; catalysis incl. photocatalysis
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Prof. Dr. Vladislav V. Kharton

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Guest Editor

Institute of Solid State Physics Russian Academy of Sciences, Chernogolovka, 142432 Moscow, Russia
Interests: nanostructured materials; ceramics; ceramic engineering; sintering; coating; material characterization; grain boundaries; XPS; X-ray diffraction; X-ray absorption spectroscopy; SEM analysis; differential thermal analysis; solid oxide fuel cells; membranes
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Prof. Dr. Denis Osinkin

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Institute of High-Temperature Electrochemistry, Yekaterinburg, Russia
Interests: electrochemical devices based on solid electrolytes; fuel cells; electrolyzers; hydrogen production systems; ceramic membranes; kinetics of hydrogen oxidation and oxygen reduction; impedance spectroscopy; distribution of relaxation times

Special Issue Information

Dear Colleagues,

We invite you to submit your works to a Special Issue titled “Membrane Technology for Sustainable Future—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.
Methods for obtaining promising nanostructured and nanocomposite electrolyte materials.
Development of methods for supporting thin layers of electrolytes (oxide-ion or protonic conductors) on SOFC anodic substrates (bulk or metal-supported nanocomposites) by physical vacuum deposition (magnetron deposition, pulsed laser deposition), chemical vapor deposition as well as electrochemical methods, ceramic and solution technologies, etc.
Three-dimensional printing and additive manufacturing for the formation of SOFC/SOE film structures; optimization of cathode and anode compositions and sintering procedures (microwave or radiation-thermal sintering, etc.).
Design of spatially graded interfaces of electrolytes with cathode and anode materials to prevent degradation in working conditions.
Electrochemical performance and long-term stability tests SOFC/SOE, characterization of layer composition and nanostructure after testing.
SOFC internal reforming operation mode.

We look forward to receiving your contributions

Prof. Dr. Vladislav Sadykov
Prof. Dr. Vladislav V. Kharton
Prof. Dr. Denis Osinkin
Prof. Dr. Christos Argirusis
Guest Editors

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

solid oxide fuel cells
solid oxide electrolyzers
SOFC anode substrates
oxide ion and protonic conductors
supporting thin layers of electrolytes by physical and chemical procedures
design of spatially graded cathode and anode layers
sintering procedures
electrochemical performance characterization and mathematical modeling
long-term stability tests

Published Papers (5 papers)

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Research

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Open AccessArticle

Highly Conductive Fe-Doped (La,Sr)(Ga,Mg)O_3−δ Solid-State Membranes for Electrochemical Application

and

Membranes 2023, 13(5), 502; https://doi.org/10.3390/membranes13050502 - 10 May 2023

Cited by 1 | Viewed by 900

Abstract

Membranes based on complex solid oxides with oxygen-ionic conductivity are widely used in high-temperature electrochemical devices such as fuel cells, electrolyzers, sensors, gas purifiers, etc. The performance of these devices depends on the oxygen-ionic conductivity value of the membrane. Highly conductive complex oxides with the overall composition of (La,Sr)(Ga,Mg)O₃ have regained the attention of researchers in recent years due to the progress in the development of electrochemical devices with symmetrical electrodes. In this research, we studied how the introduction of iron cations into the gallium sublattice in (La,Sr)(Ga,Mg)O₃ affects the fundamental properties of the oxides and the electrochemical performance of cells based on (La,Sr)(Ga,Fe,Mg)O₃. It was found that the introduction of iron leads to an increase in the electrical conductivity and thermal expansion in an oxidizing atmosphere, while no such behavior was observed in a wet hydrogen atmosphere. The introduction of iron into a (La,Sr)(Ga,Mg)O₃ electrolyte leads to an increase in the electrochemical activity of Sr₂Fe_1.5Mo_0.5O_6−δ electrodes in contact with the electrolyte. Fuel cell studies have shown that, in the case of a 550 µm-thick Fe-doped (La,Sr)(Ga,Mg)O₃ supporting electrolyte (Fe content 10 mol.%) and symmetrical Sr₂Fe_1.5Mo_0.5O_6−δ electrodes, the cell exhibits a power density of more than 600 mW/cm² at 800 °C. Full article

(This article belongs to the Special Issue Membrane Technology for Sustainable Future—Solid Oxide Fuel Cells)

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Open AccessArticle

Development of La_1.7Ca_0.3Ni_1−yCu_yO_4+δ Materials for Oxygen Permeation Membranes and Cathodes for Intermediate-Temperature Solid Oxide Fuel Cells

and

Membranes 2022, 12(12), 1222; https://doi.org/10.3390/membranes12121222 - 02 Dec 2022

Cited by 1 | Viewed by 1651

Abstract

The La_1.7Ca_0.3Ni_1−yCu_yO_4+δ (y = 0.0–0.4) nickelates, synthesized via a solid-state reaction method, are investigated as prospective materials for oxygen permeation membranes and IT-SOFC cathodes. The obtained oxides are single-phase and possess a tetragonal structure (I4/mmm sp. gr.). The unit cell parameter c and the cell volume increase with Cu-substitution. The interstitial oxygen content and total conductivity decrease with Cu-substitution. The low concentration of mobile interstitial oxygen ions results in a limited oxygen permeability of Cu-substituted La_1.7Ca_0.3NiO_4+δ ceramic membranes. However, increasing the Cu content over y = 0.2 induces two beneficial effects: enhancement of the electrochemical activity of the La_1.7Ca_0.3Ni_1−yCu_yO_4+δ (y = 0.0; 0.2; 0.4) electrodes and decreasing the sintering temperature from 1200 °C to 900 °C. Enhanced electrode activity is due to better sintering properties of the developed materials ensuring excellent adhesion and facilitating the charge transfer at the electrode/electrolyte interface and, probably, faster oxygen exchange in Cu-rich materials. The polarization resistance of the La_1.7Ca_0.3Ni_1.6Cu_0.4O_4+δ electrode on the Ce_0.8Sm_0.2O_1.9 electrolyte is as low as 0.15 Ω cm² and 1.95 Ω cm² at 850 °C and 700 °C in air, respectively. The results of the present work demonstrate that the developed La_1.7Ca_0.3Ni_0.6Cu_0.4O_4+δ-based electrode can be considered as a potential cathode for intermediate-temperature solid oxide fuel cells. Full article

(This article belongs to the Special Issue Membrane Technology for Sustainable Future—Solid Oxide Fuel Cells)

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Open AccessArticle

Densification and Proton Conductivity of La_1-xBa_xScO_3-δ Electrolyte Membranes

and

Membranes 2022, 12(11), 1084; https://doi.org/10.3390/membranes12111084 - 31 Oct 2022

Cited by 2 | Viewed by 969

Abstract

Bain La_1-xBa_xScO_3-δ impairs sintering and leads to a decrease in its ceramic density. Two approaches have been studied for obtaining dense ceramics: using a high processing temperature and the introduction of a Co₃O₄ sintering additive. An addition of only 0.5 wt% of Co₃O₄ sintering additive, despite the positive sintering effect, causes a noticeable violation of stoichiometry, with partial decomposition of the material. This can lead to the formation of cationic vacancies, which form associates with oxygen vacancies and significantly reduce the oxygen ion and proton conductivity of the materials. There is also a partial substitution of Co for Sc in La_1-xBa_xScO_3-δ, which reduces the stability of protons: it reduces the enthalpy of the hydration reaction, but increases the mobility of protons. Thus, the Co₃O₄ sintering additive causes a complex of negative effects on the conductivity of La_1-xBa_xScO_3-δ materials. Only high-temperature (1800 °C) processing with protection against Ba loss contributes to the production of dense La_1-xBa_xScO_3-δ ceramics. The chemical composition of such ceramics corresponds well to the specified one, which ensures high water uptake and, consequently, high proton conductivity. Full article

(This article belongs to the Special Issue Membrane Technology for Sustainable Future—Solid Oxide Fuel Cells)

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Review

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Open AccessReview

Design of Mixed Ionic-Electronic Materials for Permselective Membranes and Solid Oxide Fuel Cells Based on Their Oxygen and Hydrogen Mobility

and

Membranes 2023, 13(8), 698; https://doi.org/10.3390/membranes13080698 - 27 Jul 2023

Cited by 1 | Viewed by 663

Abstract

Oxygen and hydrogen mobility are among the important characteristics for the operation of solid oxide fuel cells, permselective membranes and many other electrochemical devices. This, along with other characteristics, enables a high-power density in solid oxide fuel cells due to reducing the electrolyte resistance and enabling the electrode processes to not be limited by the electrode-electrolyte-gas phase triple-phase boundary, as well as providing high oxygen or hydrogen permeation fluxes for membranes due to a high ambipolar conductivity. This work focuses on the oxygen and hydrogen diffusion of mixed ionic (oxide ionic or/and protonic)–electronic conducting materials for these devices, and its role in their performance. The main laws of bulk diffusion and surface exchange are highlighted. Isotope exchange techniques allow us to study these processes in detail. Ionic transport properties of conventional and state-of-the-art materials including perovskites, Ruddlesden–Popper phases, fluorites, pyrochlores, composites, etc., are reviewed. Full article

(This article belongs to the Special Issue Membrane Technology for Sustainable Future—Solid Oxide Fuel Cells)

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Open AccessReview

Layered Perovskites BaLn_nIn_nO_3n+1 (n = 1, 2) for Electrochemical Applications: A Mini Review

Nataliia Tarasova

Membranes 2023, 13(1), 34; https://doi.org/10.3390/membranes13010034 - 28 Dec 2022

Cited by 3 | Viewed by 1703

Abstract

Modern humanity is facing many challenges, such as declining reserves of fossil energy resources and their increasing prices, climate change and an increase in the number of respiratory diseases including COVID-19. This causes an urgent need to create advanced energy materials and technologies to support the sustainable development of renewable energy systems including hydrogen energy. Layered perovskites have many attractions due to their physical and chemical properties. The structure of such compounds contains perovskite layers divided by layers with different frameworks, which provide their properties’ features. Proton-conduction layered perovskites open up a novel structural class of protonic conductors, potentially suitable for application in such hydrogen energy devices as protonic ceramic electrolysis cells and protonic ceramic fuel cells. In this mini review, the special features of proton transport in the novel class of proton conductors BaLn_nIn_nO_3n+1 (n = 1, 2) with a layered perovskite structure are observed and general regularities are discussed. Full article

(This article belongs to the Special Issue Membrane Technology for Sustainable Future—Solid Oxide Fuel Cells)

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