Submit to Applied Sciences Review for Applied Sciences Propose a Special Issue

Journal Browser

Promising Materials and Technologies for Solid Oxide Electrochemical Devices

Print Special Issue Flyer
Special Issue Editors
Special Issue Information
Keywords
Published Papers

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Energy Science and Technology".

Deadline for manuscript submissions: closed (15 April 2022) | Viewed by 11355

Share This Special Issue

Special Issue Editor

Dr. Liliya Dunyushkina

E-Mail Website
Guest Editor

Institute of High Temperature Electrochemistry, 20 Akademicheskaya St, 620990 Ekaterinburg, Russia
Interests: oxide ion- and proton-conducting solid electrolytes; energy conversion; solid oxide fuel cells; solid oxide electrolyzers; solid oxide sensors; deposition of solid oxide films
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Solid oxide-based electrochemical devices, such as fuel cells, electrolyzers, supercapacitors, batteries, pumps, sensors, and so on, are becoming increasingly important in efforts to solve green energy, environmental, and healthcare issues. Solid oxide fuel cells are promising devices for clean energy production by conversion of the chemical energy of a fuel into electricity. Solid oxide-based electrolysis is an effective technology for the production of green hydrogen which is currently considered the fuel of the future. Oxygen pumping technologies have great potential for use in healthcare, especially in the context of the COVID-19 pandemic. Valid and reliable solid oxide-based sensors are thus urgently needed for environmental monitoring.

The Special Issue of Applied Sciences on “Promising Materials and Technologies for Solid Oxide Electrochemical Devices” aims to cover recent advances and new trends in the development of materials and technologies for solid oxide electrochemical cells and their processing and performance; the modeling, design, fabrication, and testing of cells; and related activities in the field of solid oxide electrochemical devices. Research papers, theoretical studies, and progress reviews are all welcome.

I look forward to receiving your work.

Dr. Liliya Dunyushkina
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. Applied Sciences is an international peer-reviewed open access semimonthly 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 2400 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 electrolyte
energy conversion
energy storage
hydrogen production
solid oxide fuel cell
solid oxide electrolyzer
solid oxide sensor

Published Papers (6 papers)

Download All Papers

Editorial

Jump to: Research

2 pages, 166 KiB

Open AccessEditorial

Special Issue on Promising Materials and Technologies for Solid Oxide Electrochemical Devices

by Liliya Dunyushkina

Appl. Sci. 2022, 12(19), 9419; https://0-doi-org.brum.beds.ac.uk/10.3390/app12199419 - 20 Sep 2022

Viewed by 725

Abstract

Solid oxide electrochemical devices, such as fuel cells, electrolyzers, pumps, sensors, etc [...] Full article

(This article belongs to the Special Issue Promising Materials and Technologies for Solid Oxide Electrochemical Devices)

Research

Jump to: Editorial

11 pages, 2810 KiB

Open AccessArticle

Solid-Electrolyte Amperometric Sensor for Simultaneous Measurement of CO and CO₂ in Nitrogen

by Anatoly Kalyakin, Alexander Volkov and Liliya Dunyushkina

Appl. Sci. 2022, 12(9), 4515; https://0-doi-org.brum.beds.ac.uk/10.3390/app12094515 - 29 Apr 2022

Cited by 4 | Viewed by 1574

Abstract

A solid-state amperometric sensor based on yttria-stabilized zirconia (YSZ) for the simultaneous measurement of CO and CO₂ concentrations in inert gases was fabricated. The designed sensor consists of two electrically isolated ceramic cells made of YSZ and equipped with Pt electrodes. Ceramic capillaries connecting an inner gas chamber of each cell with the outside atmosphere serve as diffusion barriers. One of the cells is intended for sensing CO, whereas the other is for sensing CO₂ in the gaseous atmosphere. The electrochemical response of the sensor was studied in the temperature range of 600–750 °C in the presence of up to 10% of CO and CO₂ in nitrogen. The limiting currents of the two cells were shown to rise linearly with the relevant carbon oxide concentration, and no perceptible cross-sensitivity effect toward the other carbon oxide was found. The sensor demonstrated high stability and reproducibility of results and good dynamic characteristics. The novelty of this research lies in the development of a simple, reliable and fast solid-oxide sensor for simultaneous sensing of CO and CO₂ in inert gases, which can be used for the control of atmosphere in, for example, pharmaceutical, chemical, food storage industries. Full article

(This article belongs to the Special Issue Promising Materials and Technologies for Solid Oxide Electrochemical Devices)

► Show Figures

Figure 1

12 pages, 1574 KiB

Open AccessArticle

Proton Conductivity of La₂(Hf₂₋_xLa_x)O₇₋_x_/2 “Stuffed” Pyrochlores

by Anna V. Shlyakhtina, Nikolay V. Lyskov, Galina E. Nikiforova, Anna V. Kasyanova, Galina A. Vorobieva, Igor V. Kolbanev, Dmitry N. Stolbov and Dmitry A. Medvedev

Appl. Sci. 2022, 12(9), 4342; https://0-doi-org.brum.beds.ac.uk/10.3390/app12094342 - 25 Apr 2022

Cited by 6 | Viewed by 1473

Abstract

The design of new oxygen- and proton-conducting materials is of paramount importance for their possible utilization in solid oxide fuel cells. In the present work, La₂(Hf_2–xLa_x)O_7–x/2 (x = 0, 0.1) ceramics were prepared using ball milling of oxide mixtures (La₂O₃ and HfO₂) followed by high-temperature annealing at 1600 °C for 10 h in air. La₂Hf₂O₇ ceramics exhibit an ordered pyrochlore-type structure, whereas La₂(Hf_1.9La_0.1)O_6.95 has a defect pyrochlore structure type with oxygen vacancies at the 48f positions. The oxygen ion and proton conductivity of La₂(Hf_1.9La_0.1)O_6.95 “stuffed” pyrochlore ceramics was investigated by electrochemical impedance spectroscopy (two-probe AC) and four-probe DC measurements in a dry and a wet atmosphere (air and nitrogen). The use of two distinct conductivity measurement techniques ensured, for the first time, the collection of reliable data on the proton conductivity of the La₂(Hf_1.9La_0.1)O_6.95 “stuffed” hafnate pyrochlore. La₂Hf₂O₇ was found to be a dielectric in the range 400–900 °C, whereas the La₂(Hf_1.9La_0.1)O_6.95 “stuffed” pyrochlore had both oxygen ion and proton conductivities in this temperature range. The proton conductivity level was found to be equal to ~8 × 10⁻⁵ S/cm at 700 °C. Clearly, the proton conductivity of the La₂(Hf_1.9La_0.1)O_6.95 “stuffed” hafnate pyrochlore is mainly due to the hydration of oxygen vacancies at 48f positions. Full article

(This article belongs to the Special Issue Promising Materials and Technologies for Solid Oxide Electrochemical Devices)

► Show Figures

Figure 1

10 pages, 2109 KiB

Open AccessArticle

Protonic Transport in Layered Perovskites BaLa_nIn_nO_3n+1 (n = 1, 2) with Ruddlesden-Popper Structure

by Nataliia Tarasova, Anzhelika Galisheva, Irina Animitsa, Daniil Korona, Hala Kreimesh and Irina Fedorova

Appl. Sci. 2022, 12(8), 4082; https://0-doi-org.brum.beds.ac.uk/10.3390/app12084082 - 18 Apr 2022

Cited by 16 | Viewed by 1722

Abstract

The work focused on the layered perovskite-related materials as the potential electrolytic components of such devices as proton conducting solid oxide fuel cells for the area of clean energy. The two-layered perovskite BaLa₂In₂O₇ with the Ruddlesden–Popper structure was investigated as a protonic conductor for the first time. The role of increasing the amount of perovskite blocks in the layered structure on the ionic transport was investigated. It was shown that layered perovskites BaLa_nIn_nO_3n+1 (n = 1, 2) demonstrate nearly pure protonic conductivity below 350 °C. Full article

(This article belongs to the Special Issue Promising Materials and Technologies for Solid Oxide Electrochemical Devices)

► Show Figures

Figure 1

26 pages, 5419 KiB

Open AccessArticle

High-Temperature Behavior, Oxygen Transport Properties, and Electrochemical Performance of Cu-Substituted Nd_1.6Ca_0.4NiO₄₊_δ Electrode Materials

by Tatiana Maksimchuk, Elena Filonova, Denis Mishchenko, Nikita Eremeev, Ekaterina Sadovskaya, Ivan Bobrikov, Andrey Fetisov, Nadezhda Pikalova, Alexander Kolchugin, Alexander Shmakov, Vladislav Sadykov and Elena Pikalova

Appl. Sci. 2022, 12(8), 3747; https://0-doi-org.brum.beds.ac.uk/10.3390/app12083747 - 08 Apr 2022

Cited by 10 | Viewed by 2387

Abstract

In this study, Nd_1.6Ca_0.4Ni_1−yCu_yO_4+δ-based electrode materials for intermediate temperature solid oxide fuel cells (IT-SOFCs) are investigated. Materials of the series (y = 0–0.4) are obtained by pyrolysis of glycerol-nitrate compositions. The study of crystal structure and high-temperature stability in air and under low oxygen partial pressure atmospheres are performed using high-resolution neutron and in situ X-ray powder diffraction. All the samples under the study assume a structure with Bmab sp.gr. below 350 °C and with I4/mmm sp.gr. above 500 °C. A transition in the volume thermal expansion coefficient values from 7.8–9.3 to 9.1–12.0 × 10⁻⁶, K⁻¹ is observed at approximately 400 °C in air and 500 °C in helium.The oxygen self-diffusion coefficient values, obtained using isotope exchange, monotonically decrease with the Cu content increasing, while concentration dependence of the charge carriers goes through the maximum at x = 0.2. The Nd_1.6Ca_0.4Ni_0.8Cu_0.2O_4+δ electrode materialdemonstrates chemical compatibility and superior electrochemical performance in the symmetrical cells with Ce_0.8Sm_0.₂O_1.9, BaCe_0.8Sm_0.2O_3−δ, BaCe_0.8Gd_0.19Cu_0.1O_3−δ and BaCe_0.5Zr_0.3Y_0.1Yb_0.1O_3−δ solid electrolytes, potentially for application in IT-SOFCs. Full article

(This article belongs to the Special Issue Promising Materials and Technologies for Solid Oxide Electrochemical Devices)

► Show Figures

Graphical abstract

15 pages, 3598 KiB

Open AccessFeature PaperArticle

Crystal Structure, Electrical Conductivity and Hydration of the Novel Oxygen-Deficient Perovskite La₂ScZnO_5.5, Doped with MgO and CaO

by Ksenia Belova, Anastasia Egorova, Svetlana Pachina and Irina Animitsa

Appl. Sci. 2022, 12(3), 1181; https://0-doi-org.brum.beds.ac.uk/10.3390/app12031181 - 24 Jan 2022

Cited by 6 | Viewed by 2591

Abstract

This paper demonstrates the possibility of creating oxygen deficiency in perovskites A⁺³B⁺³O₃ by introducing two types of cations with different charges into the B-sublattice. For this, it is proposed to introduce a two-charged cation, for example, Zn²⁺, as an alternative to alkaline earth metals. Previously, this possibility was demonstrated for aluminate LaAlO₃ and indate LaInO₃. In this article, we have focused on the modification of the scandium-containing perovskite LaScO₃. The novel oxygen-deficient perovskite La₂ScZnO_5.5 and doped phases La_1.9Ca_0.1ScZnO_5.45, La₂Sc_0.9Ca_0.1ZnO_5.45, and La₂Sc_0.9Mg_0.1ZnO_5.45 were obtained via a solid-state reaction process. Their phase composition and hydration were investigated by XRD and TGA + MS techniques. The conductivities of these materials were measured by the electrochemical impedance technique under atmospheres of various water vapor partial pressures. All phases crystallized in orthorhombic symmetry with the Pnma space group. The phases were capable of reversible water uptake; the proton concentration increased in the order of La₂ScZnO_5.5 < La₂Sc_0.9Mg_0.1ZnO_5.45 < La₂Sc_0.9Ca_0.1ZnO_5.45 ≈ La_1.9Ca_0.1ScZnO_5.45 and reached ~90% hydration limit for Ca²⁺-doped phases. The total conductivities increased with the increase in the free lattice volume in the sequence of σLa₂ScZnO_5.5 < σLa₂Sc_0.9Mg_0.1ZnO_5.45 < σLa_1.9Ca_0.1ScZnO_5.45 < σLa₂Sc_0.9Ca_0.1ZnO_5.45, the activation energy decreased in the same sequence. The sample La₂Sc_0.9Ca_0.1ZnO_5.45 showed the highest conductivity of about 10⁻³ S∙cm⁻¹ at 650 °C (dry air pH₂O = 3.5·10⁻⁵ atm). Water incorporation was accompanied by an increase in conductivity in wet air (pH₂O = 2·10⁻² atm) due to the appearance of proton conductivity. The sample La₂Sc_0.9Ca_0.1ZnO_5.45 showed a conductivity of about 10⁻⁵ S∙cm⁻¹ at 350 °C (pH₂O = 2·10⁻² atm). A comparison of conductivities of obtained phase La₂ScZnO_5.5 with the conductivities of La₂AlZnO_5.5 and La₂InZnO_5.5 was made; the nature of the B-cation did not significantly affect the total conductivity. Full article

(This article belongs to the Special Issue Promising Materials and Technologies for Solid Oxide Electrochemical Devices)

► Show Figures