Special Issue "Emerging Materials and Fabrication Methods for Solid Oxide Fuel Cells (SOFCs)"

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "Advanced Energy Materials".

Deadline for manuscript submissions: 31 January 2021.

Special Issue Editor

Dr. Bahman Amini Horri
Website SciProfiles
Guest Editor
Department of Chemical & Process Engineering, Faculty of Engineering & Physical Sciences, University of Surrey, Guildford, GU2 7XH, United Kingdom
Interests: solid oxide fuel cells and electrolysers; hydrogen production and energy system optimisation; ceramic nanocomposites; energy materials

Special Issue Information

Dear colleagues,

I am pleased to invite you to submit the results of your recent studies in the field of “Emerging Materials and Fabrication Methods for Solid Oxide Fuel Cells” to a Special Issue of Energies.

Today, the ever-increasing energy demand and the tightening regulations for emissions control have caused a great interest in developing more efficient power generation systems. Amongst various types of fuel cells, the solid oxide fuel cell (SOFC) is considered as one of the most promising alternative techniques for developing prospective portable and stationary power systems. This is mainly because of the high energy conversion efficiency, diverse fuel versatility, great heat integration capability, acceptable power density, and environmentally friendly operability associated with the SOFC operation. Unlike other types of fuel cells, SOFCs do not require precious metals to operate and can, instead, efficiently work with Ni, Cu, Co, and other cheap and widely available transition and alkaline earth metals.

Currently, yttria-stabilized zirconia (YSZ) is the state-of-the-art material used for fabrication of SOFCs. However, addressing the contemporary operational and fabrication requirements, such as shifting from electrolyte-supported to anode-supported geometry, lowering the operational temperature, and developing thin films and bi-layered electrolytes, necessitates the development of more robust materials for SOFCs.

Therefore, the focus of this Special Issue of Energies will be on development of alternative SOFC materials and novel techniques for the fabrication of SOFCs. The key topics covered by this Special Issue include, but are not limited to the following:

  • Nanostructured SOFC composites (e.g. nanorods, nanowires, nanotubes, etc.)
  • Nanocrystalline SOFC powders and ceramic nanocomposites
  • Novel electrolytes materials and superionic mixed composites for SOFCs
  • Low-temperature SOFC/SOEC materials
  • Synthesis and characteristics of the SOFC anode, electrolyte, and cathode nanocomposites
  • Microstructural improvement of the SOFC supporting layers
  • Mixed ionic–electronic ceramic composites
  • Novel fabrication methods and stack design techniques
  • SOFC electrochemical performance and impedance analysis
  • Novel supporting metals for metal-supported SOFCs

Dr. Bahman Amini Horri
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 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. Energies 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

  • solid oxide fuel cells
  • SOFC
  • ceramic nanocomposites
  • nanocrystalline SOFC powders
  • superionic electrolytes
  • low-temperature SOFCs
  • SOFC anodes
  • SOFC cathode composites
  • SOFC fabrication methods
  • metal-supported SOFCs
  • stack design
  • SOFC performance analysis

Published Papers (1 paper)

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Research

Open AccessArticle
The Role of Bi-Polar Plate Design and the Start-Up Protocol in the Spatiotemporal Dynamics during Solid Oxide Fuel Cell Anode Reduction
Energies 2020, 13(14), 3552; https://doi.org/10.3390/en13143552 - 10 Jul 2020
Abstract
Start-up conditions largely dictate the performance longevity for solid oxide fuel cells (SOFCs). The SOFC anode is typically deposited as NiO-ceramic that is reduced to Ni-ceramic during start-up. Effective reduction is imperative to ensuring that the anode is electrochemically active and able to [...] Read more.
Start-up conditions largely dictate the performance longevity for solid oxide fuel cells (SOFCs). The SOFC anode is typically deposited as NiO-ceramic that is reduced to Ni-ceramic during start-up. Effective reduction is imperative to ensuring that the anode is electrochemically active and able to produce electronic and ionic current; the bi-polar plates (BPP) next to the anode allow the transport of current and gases, via land and channels, respectively. This study investigates a commercial SOFC stack that failed following a typical start-up procedure. The BPP design was found to substantially affect the spatiotemporal dynamics of the anode reduction; Raman spectroscopy detected electrochemically inactive NiO on the anode surface below the BPP land-contacts; X-ray computed tomography (CT) and scanning electron microscopy (SEM) identified associated contrasts in the electrode porosity, confirming the extension of heterogeneous features beyond the anode surface, towards the electrolyte-anode interface. Failure studies such as this are important for improving statistical confidence in commercial SOFCs and ultimately their competitiveness within the mass-market. Moreover, the spatiotemporal information presented here may aid in the development of novel BPP design and improved reduction protocol methods that minimize cell and stack strain, and thus maximize cell longevity. Full article
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