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Nanomaterials
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Nanomaterials for Solid Oxide Fuel Cells
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Nanomaterials for Solid Oxide Fuel Cells

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Energy and Catalysis".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 5455

Special Issue Editor

Dr. Annie Le Gal la Salle

E-Mail Website
Guest Editor
Institut des Materiaux Jean Rouxel, UMR CNRS-Université de Nantes N°6502, 2, rue de la Houssinière, BP 32229, CEDEX 3, 44322 NANTES, France
Interests: SOFC; SOEC; impedance analysis; electrochemistry; ceramic synthesis; biomass; gasification; waste and material recycling

Special Issue Information

Dear Colleagues,

Solid oxide fuel cells (SOFCs) are all-solid state devices converting the chemical energy of gaseous fuels, such as hydrogen or natural gas, into electricity, via electrochemical processes and presenting advantages such as high energy conversion efficiency, low greenhouse gas emission, or flexibility of fuels. SOFCs consist in elementary units of two porous components (anode and cathode) separated by a highly dense component (electrolyte), assembled in stacks by interconnects. Although many materials for SOFCs have been developed over past years, challenges of cost and limited durability remain, which are linked to surface properties such as bad interface between the different materials or between materials and gaseous atmosphere, but also to bulk properties of the materials, such as ion diffusivity, electronic conduction and electrocatalytic activity, which are governed at the nano-scale level.

The purpose of the present issue is to collect state-of-the art work resulting in an increase electrode materials properties (ionic and electronic conductivity, electro-catalysis, chemically compatibility towards gases, thermal stability or porosity, etc.) or electrolyte and interconnects properties (ionic conductivity, chemical and mechanical compatibility with the other components of the cell, sintering ability, etc.). Review articles or research papers dealing with improvements of these compounds at the nano-structured levels are solicited and welcomed.

Dr. Annie Le Gal la Salle
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. Nanomaterials 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 2900 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

  • Materials development
  • Nanomaterials
  • Oxides
  • Electrodes
  • Electrolyte
  • SOFC performance
  • Low Temperature Sintering
  • Densification
  • Grain Size Control
  • Chemical Stability

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Published Papers (2 papers)

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Research

11 pages, 4666 KiB  
Article
Feasibility Synthesis and Characterization of Gadolinia Doped Ceria Coatings Obtained by Cathodic Arc Evaporation
by Pascal Briois, Eric Aubry, Armelle Ringuedé, Michel Cassir and Alain Billard
Nanomaterials 2021, 11(5), 1211; https://doi.org/10.3390/nano11051211 - 3 May 2021
Cited by 2 | Viewed by 1855
Abstract
Gadolinia doped ceria coatings were elaborated by cathodic arc evaporation from a metallic Ce–Gd (90–10 at.%) target inserted into a conventional multiarc Ti evaporation target in the presence of a reactive argon–oxygen gas mixture. The structural and chemical features of these films were [...] Read more.
Gadolinia doped ceria coatings were elaborated by cathodic arc evaporation from a metallic Ce–Gd (90–10 at.%) target inserted into a conventional multiarc Ti evaporation target in the presence of a reactive argon–oxygen gas mixture. The structural and chemical features of these films were determined by x-ray diffraction and scanning electron microscopy. Their electrical properties were characterized using impedance spectroscopy measurements. It was shown that the as-deposited coatings crystallize in the fluorite type fcc structure of ceria and that their composition is the same as that of the target. The morphology of the coatings is influenced by the evaporation parameter (stress and droplet). The electrical measurements showed two contributions in Nyquist representation and the activation energy was slightly higher than that given in the literature data for the bulk material. Full article
(This article belongs to the Special Issue Nanomaterials for Solid Oxide Fuel Cells)
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16 pages, 5227 KiB  
Article
A Novel, Simple and Highly Efficient Route to Obtain PrBaMn2O5+δ Double Perovskite: Mechanochemical Synthesis
by Francisco J. Garcia-Garcia, María J. Sayagués and Francisco J. Gotor
Nanomaterials 2021, 11(2), 380; https://doi.org/10.3390/nano11020380 - 2 Feb 2021
Cited by 20 | Viewed by 2993
Abstract
In this work, a mechanochemical route was proposed for the synthesis of the PrBaMn2O5+δ (PMBO) double layered perovskite phase. The mechanochemical reaction between Pr6O11, BaO2, and MnO powders with cationic stoichiometric ratios of 1/1/2 [...] Read more.
In this work, a mechanochemical route was proposed for the synthesis of the PrBaMn2O5+δ (PMBO) double layered perovskite phase. The mechanochemical reaction between Pr6O11, BaO2, and MnO powders with cationic stoichiometric ratios of 1/1/2 for Pr/Ba/Mn was performed using high-energy milling conditions in air. After 150 min of milling, a new phase with perovskite structure and cubic symmetry consistent with the A-site disordered Pr0.5Ba0.5MnO3 phase was formed. When this new phase was subsequently annealed at a high temperature in an inert Ar atmosphere, the layered PrBaMn2O5+δ phase was obtained without needing to use a reducing atmosphere. At 1100 °C, the fully reduced layered PrBaMn2O5 phase was achieved. A weight gain was observed in the 200–300 °C temperature range when this fully reduced phase was annealed in air, which was consistent with the transformation into the fully oxidized PrBaMn2O6 phase. The microstructural characterization by SEM, TEM, and HRTEM ascertained the formation of the intended PrBaMn2O5+δ phase. Electrical characterization shows very high electrical conductivity of layered PBMO in a reducing atmosphere and suitable in an oxidizing atmosphere, becoming, therefore, excellent candidates as solid oxide fuel cell (SOFC electrodes). Full article
(This article belongs to the Special Issue Nanomaterials for Solid Oxide Fuel Cells)
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