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Special Issue "Proton-Conducting Oxides for Electrochemical Application: Progress and Prospects"

A special issue of Materials (ISSN 1996-1944).

Deadline for manuscript submissions: 30 June 2019

Special Issue Editors

Guest Editor
Prof. Lei Bi

Institute of Materials for Energy and Environment, and College of Materials Science and Engineering, Qingdao University, Qingdao, China
Website | E-Mail
Interests: proton-conducting oxides; solid oxide fuel cells; density functional theory; Ionic–electronic mixed conductors
Guest Editor
Dr. Dmitry Medvedev

Laboratory of electrochemical devices based on solid oxide proton electrolytes, Institute of High Temperature Electrochemistry, Yekaterinburg, Russia
Website | E-Mail
Interests: solid state electrochemistry; energy conversion; proton-conducting electrolytes; perovskite; reversible solid oxide cells
Guest Editor
Prof. Irina Animitsa

Institute of Natural Sciences and Mathematics, Ural Federal University named after the first President of Russia B.N. Yeltsin, Yekaterinburg, Russia
Website | E-Mail
Interests: materials science; transport phenomena in solids; solid-state electrochemistry; solid electrolytes

Special Issue Information

Dear Colleagues,

Solid oxide electrolytes with pronounced proton transport constitute serious competitors to conventional oxygen-conducting electrolytes from the applied point of view. The higher mobility of protons and their low migration barrier allow to reach excellent ionic conductivity over a wide temperature range (300–700 °C). This feature, coupled with a rational selection of conjunct materials and technological innovations, enables the design of electrochemical devices with very high performance, promising efficiency and wide functionality, such as energy conversion (protonic ceramic fuel and electrolysis cells, reversible solid oxide cells), chemical conversion (membrane reactors), analytical detection (sensors), hydrogen separation and compression (electrochemical pumps). Although many promising results have been reached in the past few years, the development of new materials and the search for new “structure–properties–performance” relationships remain the focus of undiminished interest in scientists.

The Special Issue “Proton-Conducting Oxides for Electrochemical Application: Progress and Prospects” aims at discussing recent research on these unique materials, their functional properties, and electrochemical applications. Scientists working in these fundamental and applied fields are invited to contribute to this Special Issue.

Prof. Lei Bi
Dr. Dmitry Medvedev
Prof. Irina Animitsa
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 papers will be 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. Materials 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 1800 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

  • PCFCs
  • PCECs
  • reversible solid oxide cells
  • energy and chemical conversion
  • proton transport
  • renewable energy
  • sensors and pumps
  • separation membranes
  • theoretical simulations

Published Papers (1 paper)

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Research

Open AccessFeature PaperArticle A Reversible Protonic Ceramic Cell with Symmetrically Designed Pr2NiO4+δ-Based Electrodes: Fabrication and Electrochemical Features
Materials 2019, 12(1), 118; https://doi.org/10.3390/ma12010118
Received: 23 November 2018 / Revised: 12 December 2018 / Accepted: 26 December 2018 / Published: 31 December 2018
Cited by 1 | PDF Full-text (7343 KB) | HTML Full-text | XML Full-text
Abstract
Reversible protonic ceramic cells (rPCCs) combine two different operation regimes, fuel cell and electrolysis cell modes, which allow reversible chemical-to-electrical energy conversion at reduced temperatures with high efficiency and performance. Here we present novel technological and materials science approaches, enabling a rPCC with [...] Read more.
Reversible protonic ceramic cells (rPCCs) combine two different operation regimes, fuel cell and electrolysis cell modes, which allow reversible chemical-to-electrical energy conversion at reduced temperatures with high efficiency and performance. Here we present novel technological and materials science approaches, enabling a rPCC with symmetrical functional electrodes to be prepared using a single sintering step. The response of the cell fabricated on the basis of P–N–BCZD|BCZD|PBN–BCZD (where BCZD = BaCe0.5Zr0.3Dy0.2O3−δ, PBN = Pr1.9Ba0.1NiO4+δ, P = Pr2O3, N = Ni) is studied at different temperatures and water vapor partial pressures (pH2O) by means of volt-ampere measurements, electrochemical impedance spectroscopy and distribution of relaxation times analyses. The obtained results demonstrate that symmetrical electrodes exhibit classical mixed-ionic/electronic conducting behavior with no hydration capability at 750 °C; therefore, increasing the pH2O values in both reducing and oxidizing atmospheres leads to some deterioration of their electrochemical activity. At the same time, the electrolytic properties of the BCZD membrane are improved, positively affecting the rPCC’s efficiency. The electrolysis cell mode of the rPCC is found to be more appropriate than the fuel cell mode under highly humidified atmospheres, since its improved performance is determined by the ohmic resistance, which decreases with pH2O increasing. Full article
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