Special Issue "Membranes for Fuel Cells"

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

Deadline for manuscript submissions: 30 September 2019

Special Issue Editors

Guest Editor
Dr. Cecilia Solís

Heinz Maier-Leibnitz Zentrum (FRM II), Technical University Munich, Munich, Germany.
Website | E-Mail
Interests: solid state ionics; membranes; electroceramics; solid oxide fuel cells; structure characterization
Guest Editor
Dr. María Balaguer

Instituto de Tecnología Química (Universitat Politècnica de València - Consejo Superior de Investigaciones Científicas), Valencia, Spain.
Website | E-Mail
Interests: solid oxide fuel cells; gas separation membranes; solid state electrochemistry

Special Issue Information

Dear Colleagues,

Electrolytes are very important components in fuel cells, as they are responsible for ion selection and transport to react in the electrode.

Fuel cells based on polymer electrolyte membranes (PEMs) play an important role in applications, such as power sources for portable electronics, distributed power generation, and electric vehicles. A good PEM must present high proton conductivity, excellent mechanical strength, mechanical, chemical and electrochemical stability, low fuel or oxidant crossover, and be manageable for fabrication in membrane electrode assemblies.

Solid oxide fuel cells based on oxygen ion conductors (SOFC) and protonic conduction electrolytes (PCFC) are promising candidates for green energy production as they present high efficiency, long-term stability and fuel flexibility. Membranes based on oxygen-electron conductors have been studied the last few decades for oxygen extraction from air, as well as for direct partial oxidation of natural gas. Similarly, membranes based on mixed proton–electron conducting oxides have been widely studied in recent years for application as hydrogen separation membranes and for different catalytic membrane reactors applications. The materials and composites with the highest mixed conductivity values, at high temperatures (500–1000 °C), and stable in operation conditions (high temperature and different atmospheres), are also promising candidates as electrodes in SOFC or PCFC.

This Special Issue, “Membranes for Fuel Cells”, will be a perfect forum to bring together the latest results obtained by key laboratories focused on membranes and membrane materials with applications in fuel cell research and development.

Dr. Cecilia Solís
Dr. María Balaguer
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. 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 1000 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

  • fuel cell
  • PEM
  • SOFC
  • oxygen transport membrane
  • hydrogen membrane
  • composite membrane

Published Papers (1 paper)

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Research

Open AccessArticle Protonic Conduction of Partially-Substituted CsH2PO4 and the Applicability in Electrochemical Devices
Received: 30 January 2019 / Revised: 25 March 2019 / Accepted: 2 April 2019 / Published: 9 April 2019
PDF Full-text (1204 KB)
Abstract
CsH2PO4 is a proton conductor pertaining to the acid salts group and shows a phase transition from monoclinic to cubic phase at 232 ± 2 °C under high-steam atmospheres (>30%). This cubic phase gives rise to the so-called superprotonic conductivity. [...] Read more.
CsH2PO4 is a proton conductor pertaining to the acid salts group and shows a phase transition from monoclinic to cubic phase at 232 ± 2 °C under high-steam atmospheres (>30%). This cubic phase gives rise to the so-called superprotonic conductivity. In this work, the influence of the partial substitution of Cs by Ba and Rb, as well as the partial substitution of P by W, Mo, and S in CsH2PO4 on the phase transition temperature and electrochemical properties is studied. Among the tested materials, the partial substitution by Rb led to the highest conductivity at high temperature. Furthermore, Ba and S-substituted salts exhibited the highest conductivity at low temperatures. CsH2PO4 was used as electrolyte in a fully-assembled fuel cell demonstrating the applicability of the material at high pressures and the possibility to use other materials (Cu and ZnO) instead of Pt as electrode electrocatalyst. Finally, an electrolyzer cell composed of CsH2PO4 as electrolyte, Cu and ZnO as cathode and Pt and Ag as anode was evaluated, obtaining a stable production of H2 at 250 °C. Full article
(This article belongs to the Special Issue Membranes for Fuel Cells)
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